fix(config): Don't fail on missing env

Reviewed-on: #49
Reviewed-by: Philipp Dormann <philipp@noreply.git.odit.services>

.air.linux.toml

@@ -0,0 +1,46 @@
+root = "."
+testdata_dir = "testdata"
+tmp_dir = "tmp"
+
+[build]
+  args_bin = []
+  bin = "tmp\\main"
+  cmd = "go build -o ./tmp/main ."
+  delay = 1000
+  exclude_dir = ["assets", "tmp", "vendor", "testdata"]
+  exclude_file = []
+  exclude_regex = ["_test.go"]
+  exclude_unchanged = false
+  follow_symlink = false
+  full_bin = ""
+  include_dir = []
+  include_ext = ["go", "tpl", "tmpl", "html"]
+  include_file = []
+  kill_delay = "0s"
+  log = "build-errors.log"
+  poll = false
+  poll_interval = 0
+  post_cmd = []
+  pre_cmd = []
+  rerun = false
+  rerun_delay = 500
+  send_interrupt = false
+  stop_on_error = false
+
+[color]
+  app = ""
+  build = "yellow"
+  main = "magenta"
+  runner = "green"
+  watcher = "cyan"
+
+[log]
+  main_only = false
+  time = false
+
+[misc]
+  clean_on_exit = false
+
+[screen]
+  clear_on_rebuild = false
+  keep_scroll = true

.dockerignore

@@ -1,3 +1,3 @@
 tmp
 docker-compose.yaml
-.air.toml
+.air*.toml

.env

@@ -0,0 +1,18 @@
+PORT=3000
+PRODUCION=false
+APIKEY=lfk
+EVENTNAME=Lauf für Kaya! 2025
+CURRENCYSYMBOL=€
+GOTENBERG_BASEURL=http://localhost:3001
+REDIS_ADDR=localhost:6379
+
+CARD_SUBTITLE=Kaya ist cool
+CARD_BARCODEFORMAT=ean13
+# CARD_BARCODEPREFIX=
+
+SPONSOING_RECEIPTMINIMUM=10
+SPONSORING_DISCLAIMER=Kaya ist cool, aber pass auf, dass du nicht zu viel Geld sammelst!
+SPONSORING_BARCODEFORMAT=code128
+# SPONSORING_BARCODEPREFIX=
+
+CERTIFICATE_FOOTER=Kaya ist cool, danke für deine Unterstützung!

.woodpecker/build.yml

@@ -0,0 +1,18 @@
+steps:
+  - name: build latest
+    image: woodpeckerci/plugin-docker-buildx
+    settings:
+      repo: registry.odit.services/lfk/document-server
+      tags:
+        - latest
+      registry: registry.odit.services
+      platforms: linux/amd64,linux/arm64
+      cache_from: registry.odit.services/lfk/document-server:latest
+      username:
+        from_secret: odit-registry-builder-username
+      password:
+        from_secret: odit-registry-builder-password
+    when:
+      branch: main
+when:
+  event: push

.woodpecker/release.yml

@@ -0,0 +1,17 @@
+steps:
+  - name: build tag
+    image: woodpeckerci/plugin-docker-buildx
+    settings:
+      repo: registry.odit.services/lfk/document-server
+      tags:
+        - "${CI_COMMIT_TAG}"
+      registry: registry.odit.services
+      platforms: linux/amd64,linux/arm64
+      cache_from: registry.odit.services/lfk/document-server:latest
+      username:
+        from_secret: odit-registry-builder-username
+      password:
+        from_secret: odit-registry-builder-password
+when:
+  event:
+    - tag

Dockerfile

@@ -10,5 +10,6 @@ RUN CGO_ENABLED=0 GOOS=linux go build -o server
 
 FROM scratch
 COPY --from=builder /app/server /server
+COPY static /static
 ADD https://curl.haxx.se/ca/cacert.pem /etc/ssl/certs/ca-certificates.crt
 ENTRYPOINT [ "/server" ]

README.md

@@ -2,7 +2,7 @@
 
 ## Features
 
-- 📝 HTML pdf templates
+- 📝 HTML templates for pdf generation
 - 📚 OpenAPI/Swagger documentation
 - ⚡ High-performance with go and gotenberg
 
@@ -12,9 +12,6 @@
 # Install dependencies
 go mod download
 
-# Generate the swagger docs
-swag init
-
 # Run the server
 air
 ```
@@ -29,3 +26,71 @@ The project uses:
 
 - 🏃‍♂️ go as the language and build tool
 - 🌐 gofiber for the web framework
+- 📦 air for live reload
+- 📝 swaggo for API documentation
+- 📄 gotenberg for HTML to PDF conversion
+
+### 📦 Use docker compose for external dependencies
+
+```shell
+docker compose -f docker-compose.dev.yaml up
+```
+
+### 🏃 Run via air
+
+> Install air via `go install github.com/air-verse/air@latest`
+
+```shell
+# With the default air config
+air
+
+# With the config for linux/macOS
+air -c .air.linux.toml
+
+# With the config for windows
+air -c .air.windows.toml
+```
+
+### ✒️ Update the swagger docs
+
+> Install swag via `go install github.com/swaggo/swag/cmd/swag@latest`
+
+```shell
+swag init
+```
+
+### 🐋 Build container
+
+```shell
+# single arch
+docker build -t registry.odit.services/lfk/document-server:latest .
+
+# multiarch
+docker buildx build --platform=linux/amd64,linux/arm64 -t registry.odit.services/lfk/document-server:latest --push .
+```
+
+## ⏱️ Benchmarks
+
+### Barcode Generation
+
+- Requests: 10000
+- Concurrency: Unlimited
+- Data: `123456789123`
+- Width: 1000
+- Height: 500
+
+#### No cache (cold start)
+
+| Format  | Data           | Requests/sec | Slowest | Fastest | Average |
+| ------- | -------------- | ------------ | ------- | ------- | ------- |
+| Code128 | `123456789123` | 763.3996     | 0.7995  | 0.0172  | 0.0654  |
+| EAN13   | `123456789123` | 767.1170     | 0.7607  | 0.0171  | 0.0651  |
+| QR      | `123456789123` | 683.8472     | 0.6528  | 0.0178  | 0.0730  |
+
+#### Redis cache (warm start)
+
+| Format  | Data           | Requests/sec | Slowest | Fastest | Average |
+| ------- | -------------- | ------------ | ------- | ------- | ------- |
+| Code128 | `123456789123` | 15611.5521   | 0.0965  | 0.0006  | 0.0032  |
+| EAN13   | `123456789123` | 14985.4401   | 0.0925  | 0.0006  | 0.0033  |
+| QR      | `123456789123` | 14306.2540   | 0.1143  | 0.0005  | 0.0035  |

docker-compose.dev.yaml

@@ -0,0 +1,9 @@
+services:
+  gotenberg:
+    image: gotenberg/gotenberg:8
+    ports:
+      - "3001:3000"
+  redis:
+    image: docker.dragonflydb.io/dragonflydb/dragonfly
+    ports:
+      - "6379:6379"

docker-compose.yaml

@@ -1,5 +1,15 @@
 services:
+  document-server:
+    build: .
+    ports:
+      - "3000:3000"
+    volumes:
+      - ./docker.env:/.env
   gotenberg:
     image: gotenberg/gotenberg:8
     ports:
-      - "3001:3000"
+      - "3001:3000"
+  redis:
+    image: docker.dragonflydb.io/dragonflydb/dragonfly
+    ports:
+      - "6379:6379"

docker.env

@@ -0,0 +1,18 @@
+PORT=3000
+PRODUCION=false
+APIKEY=lfk
+EVENTNAME=Lauf für Kaya! 2025
+CURRENCYSYMBOL=€
+GOTENBERG_BASEURL=http://gotenberg:3000
+REDIS_ADDR=redis:6379
+
+CARD_SUBTITLE=Kaya ist cool
+CARD_BARCODEFORMAT=ean13
+# CARD_BARCODEPREFIX=
+
+SPONSOING_RECEIPTMINIMUM=10
+SPONSORING_DISCLAIMER=Kaya ist cool, aber pass auf, dass du nicht zu viel Geld sammelst!
+SPONSORING_BARCODEFORMAT=code128
+# SPONSORING_BARCODEPREFIX=
+
+CERTIFICATE_FOOTER=Kaya ist cool, danke für deine Unterstützung!

docs/docs.go

@@ -9,14 +9,79 @@ const docTemplate = `{
     "info": {
         "description": "{{escape .Description}}",
         "title": "{{.Title}}",
-        "contact": {},
+        "termsOfService": "https://lauf-fuer-kaya.de/datenschutz",
+        "contact": {
+            "name": "ODIT.Services UG (haftungsbeschränkt)",
+            "url": "https://odit.services",
+            "email": "info@odit.services"
+        },
+        "license": {
+            "name": "CC BY-NC-SA 4.0"
+        },
         "version": "{{.Version}}"
     },
     "host": "{{.Host}}",
     "basePath": "{{.BasePath}}",
     "paths": {
-        "/cards": {
+        "/v1/barcodes/{type}/{content}": {
+            "get": {
+                "description": "Generate barcodes based on the provided data",
+                "produces": [
+                    "image/png"
+                ],
+                "tags": [
+                    "barcodes"
+                ],
+                "summary": "Generate barcodes",
+                "parameters": [
+                    {
+                        "enum": [
+                            "ean13",
+                            "code128"
+                        ],
+                        "type": "string",
+                        "description": "Barcode type",
+                        "name": "type",
+                        "in": "path",
+                        "required": true
+                    },
+                    {
+                        "minLength": 1,
+                        "type": "string",
+                        "description": "Barcode content",
+                        "name": "content",
+                        "in": "path",
+                        "required": true
+                    },
+                    {
+                        "maximum": 10000,
+                        "minimum": 1,
+                        "type": "integer",
+                        "default": 1000,
+                        "description": "Barcode width",
+                        "name": "width",
+                        "in": "query"
+                    },
+                    {
+                        "maximum": 10000,
+                        "minimum": 1,
+                        "type": "integer",
+                        "default": 1000,
+                        "description": "Barcode height",
+                        "name": "height",
+                        "in": "query"
+                    }
+                ],
+                "responses": {}
+            }
+        },
+        "/v1/pdfs/cards": {
             "post": {
+                "security": [
+                    {
+                        "ApiKeyAuth": []
+                    }
+                ],
                 "description": "Generate cards based on the provided data",
                 "consumes": [
                     "application/json"
@@ -25,7 +90,7 @@ const docTemplate = `{
                     "application/pdf"
                 ],
                 "tags": [
-                    "cards"
+                    "pdfs"
                 ],
                 "summary": "Generate runner cards",
                 "parameters": [
@@ -42,8 +107,13 @@ const docTemplate = `{
                 "responses": {}
             }
         },
-        "/certificates": {
+        "/v1/pdfs/certificates": {
             "post": {
+                "security": [
+                    {
+                        "ApiKeyAuth": []
+                    }
+                ],
                 "description": "Generate certificates based on the provided data",
                 "consumes": [
                     "application/json"
@@ -52,7 +122,7 @@ const docTemplate = `{
                     "application/pdf"
                 ],
                 "tags": [
-                    "certificates"
+                    "pdfs"
                 ],
                 "summary": "Generate runner certificates",
                 "parameters": [
@@ -69,8 +139,13 @@ const docTemplate = `{
                 "responses": {}
             }
         },
-        "/contracts": {
+        "/v1/pdfs/contracts": {
             "post": {
+                "security": [
+                    {
+                        "ApiKeyAuth": []
+                    }
+                ],
                 "description": "Generate a contract based on the provided data",
                 "consumes": [
                     "application/json"
@@ -79,7 +154,7 @@ const docTemplate = `{
                     "application/pdf"
                 ],
                 "tags": [
-                    "contracts"
+                    "pdfs"
                 ],
                 "summary": "Generate a contract",
                 "parameters": [
@@ -320,6 +395,13 @@ const docTemplate = `{
                 }
             }
         }
+    },
+    "securityDefinitions": {
+        "ApiKeyAuth": {
+            "type": "apiKey",
+            "name": "key",
+            "in": "query"
+        }
     }
 }`
 

docs/swagger.json

@@ -3,11 +3,76 @@
     "info": {
         "description": "This is the API documentation for the LfK Document Server - a tool for pdf generation.",
         "title": "LfK Document Server API",
-        "contact": {}
+        "termsOfService": "https://lauf-fuer-kaya.de/datenschutz",
+        "contact": {
+            "name": "ODIT.Services UG (haftungsbeschränkt)",
+            "url": "https://odit.services",
+            "email": "info@odit.services"
+        },
+        "license": {
+            "name": "CC BY-NC-SA 4.0"
+        }
     },
     "paths": {
-        "/cards": {
+        "/v1/barcodes/{type}/{content}": {
+            "get": {
+                "description": "Generate barcodes based on the provided data",
+                "produces": [
+                    "image/png"
+                ],
+                "tags": [
+                    "barcodes"
+                ],
+                "summary": "Generate barcodes",
+                "parameters": [
+                    {
+                        "enum": [
+                            "ean13",
+                            "code128"
+                        ],
+                        "type": "string",
+                        "description": "Barcode type",
+                        "name": "type",
+                        "in": "path",
+                        "required": true
+                    },
+                    {
+                        "minLength": 1,
+                        "type": "string",
+                        "description": "Barcode content",
+                        "name": "content",
+                        "in": "path",
+                        "required": true
+                    },
+                    {
+                        "maximum": 10000,
+                        "minimum": 1,
+                        "type": "integer",
+                        "default": 1000,
+                        "description": "Barcode width",
+                        "name": "width",
+                        "in": "query"
+                    },
+                    {
+                        "maximum": 10000,
+                        "minimum": 1,
+                        "type": "integer",
+                        "default": 1000,
+                        "description": "Barcode height",
+                        "name": "height",
+                        "in": "query"
+                    }
+                ],
+                "responses": {}
+            }
+        },
+        "/v1/pdfs/cards": {
             "post": {
+                "security": [
+                    {
+                        "ApiKeyAuth": []
+                    }
+                ],
                 "description": "Generate cards based on the provided data",
                 "consumes": [
                     "application/json"
@@ -16,7 +81,7 @@
                     "application/pdf"
                 ],
                 "tags": [
-                    "cards"
+                    "pdfs"
                 ],
                 "summary": "Generate runner cards",
                 "parameters": [
@@ -33,8 +98,13 @@
                 "responses": {}
             }
         },
-        "/certificates": {
+        "/v1/pdfs/certificates": {
             "post": {
+                "security": [
+                    {
+                        "ApiKeyAuth": []
+                    }
+                ],
                 "description": "Generate certificates based on the provided data",
                 "consumes": [
                     "application/json"
@@ -43,7 +113,7 @@
                     "application/pdf"
                 ],
                 "tags": [
-                    "certificates"
+                    "pdfs"
                 ],
                 "summary": "Generate runner certificates",
                 "parameters": [
@@ -60,8 +130,13 @@
                 "responses": {}
             }
         },
-        "/contracts": {
+        "/v1/pdfs/contracts": {
             "post": {
+                "security": [
+                    {
+                        "ApiKeyAuth": []
+                    }
+                ],
                 "description": "Generate a contract based on the provided data",
                 "consumes": [
                     "application/json"
@@ -70,7 +145,7 @@
                     "application/pdf"
                 ],
                 "tags": [
-                    "contracts"
+                    "pdfs"
                 ],
                 "summary": "Generate a contract",
                 "parameters": [
@@ -311,5 +386,12 @@
                 }
             }
         }
+    },
+    "securityDefinitions": {
+        "ApiKeyAuth": {
+            "type": "apiKey",
+            "name": "key",
+            "in": "query"
+        }
     }
 }

docs/swagger.yaml

@@ -152,12 +152,56 @@ definitions:
     - last_name
     type: object
 info:
-  contact: {}
+  contact:
+    email: info@odit.services
+    name: ODIT.Services UG (haftungsbeschränkt)
+    url: https://odit.services
   description: This is the API documentation for the LfK Document Server - a tool
     for pdf generation.
+  license:
+    name: CC BY-NC-SA 4.0
+  termsOfService: https://lauf-fuer-kaya.de/datenschutz
   title: LfK Document Server API
 paths:
-  /cards:
+  /v1/barcodes/{type}/{content}:
+    get:
+      description: Generate barcodes based on the provided data
+      parameters:
+      - description: Barcode type
+        enum:
+        - ean13
+        - code128
+        in: path
+        name: type
+        required: true
+        type: string
+      - description: Barcode content
+        in: path
+        minLength: 1
+        name: content
+        required: true
+        type: string
+      - default: 1000
+        description: Barcode width
+        in: query
+        maximum: 10000
+        minimum: 1
+        name: width
+        type: integer
+      - default: 1000
+        description: Barcode height
+        in: query
+        maximum: 10000
+        minimum: 1
+        name: height
+        type: integer
+      produces:
+      - image/png
+      responses: {}
+      summary: Generate barcodes
+      tags:
+      - barcodes
+  /v1/pdfs/cards:
     post:
       consumes:
       - application/json
@@ -172,10 +216,12 @@ paths:
       produces:
       - application/pdf
       responses: {}
+      security:
+      - ApiKeyAuth: []
       summary: Generate runner cards
       tags:
-      - cards
+      - pdfs
-  /certificates:
+  /v1/pdfs/certificates:
     post:
       consumes:
       - application/json
@@ -190,10 +236,12 @@ paths:
       produces:
       - application/pdf
       responses: {}
+      security:
+      - ApiKeyAuth: []
       summary: Generate runner certificates
       tags:
-      - certificates
+      - pdfs
-  /contracts:
+  /v1/pdfs/contracts:
     post:
       consumes:
       - application/json
@@ -208,7 +256,14 @@ paths:
       produces:
       - application/pdf
       responses: {}
+      security:
+      - ApiKeyAuth: []
       summary: Generate a contract
       tags:
-      - contracts
+      - pdfs
+securityDefinitions:
+  ApiKeyAuth:
+    in: query
+    name: key
+    type: apiKey
 swagger: "2.0"

go.mod

@@ -14,26 +14,47 @@ require (
 	github.com/KyleBanks/depth v1.2.1 // indirect
 	github.com/andybalholm/brotli v1.1.1 // indirect
 	github.com/boombuler/barcode v1.0.2 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+	github.com/fsnotify/fsnotify v1.7.0 // indirect
 	github.com/go-openapi/jsonpointer v0.21.0 // indirect
 	github.com/go-openapi/jsonreference v0.21.0 // indirect
 	github.com/go-openapi/spec v0.21.0 // indirect
 	github.com/go-openapi/swag v0.23.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/klauspost/compress v1.17.11 // indirect
+	github.com/magiconair/properties v1.8.7 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/makiuchi-d/gozxing v0.1.1 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mattn/go-runewidth v0.0.16 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/oxplot/papersizes v0.0.0-20181201065918-90a3a5ae1915 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
+	github.com/redis/go-redis/v9 v9.7.0 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/sagikazarmark/locafero v0.4.0 // indirect
+	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
+	github.com/sourcegraph/conc v0.3.0 // indirect
+	github.com/spf13/afero v1.11.0 // indirect
+	github.com/spf13/cast v1.6.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/spf13/viper v1.19.0 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
 	github.com/swaggo/files/v2 v2.0.1 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasthttp v1.57.0 // indirect
 	github.com/valyala/tcplisten v1.0.0 // indirect
+	go.uber.org/atomic v1.9.0 // indirect
+	go.uber.org/multierr v1.9.0 // indirect
+	golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect
 	golang.org/x/sys v0.27.0 // indirect
+	golang.org/x/text v0.19.0 // indirect
 	golang.org/x/tools v0.27.0 // indirect
-	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
+	golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -4,8 +4,15 @@ github.com/andybalholm/brotli v1.1.1 h1:PR2pgnyFznKEugtsUo0xLdDop5SKXd5Qf5ysW+7X
 github.com/andybalholm/brotli v1.1.1/go.mod h1:05ib4cKhjx3OQYUY22hTVd34Bc8upXjOLL2rKwwZBoA=
 github.com/boombuler/barcode v1.0.2 h1:79yrbttoZrLGkL/oOI8hBrUKucwOL0oOjUgEguGMcJ4=
 github.com/boombuler/barcode v1.0.2/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8=
+github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
+github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
+github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nosvA=
+github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyTJwOpGvigM=
 github.com/go-openapi/jsonpointer v0.21.0 h1:YgdVicSA9vH5RiHs9TZW5oyafXZFc6+2Vc1rr/O9oNQ=
 github.com/go-openapi/jsonpointer v0.21.0/go.mod h1:IUyH9l/+uyhIYQ/PXVA41Rexl+kOkAPDdXEYns6fzUY=
 github.com/go-openapi/jsonreference v0.21.0 h1:Rs+Y7hSXT83Jacb7kFyjn4ijOuVGSvOdF2+tg1TRrwQ=
@@ -20,6 +27,8 @@ github.com/gofiber/swagger v1.1.0 h1:ff3rg1fB+Rp5JN/N8jfxTiZtMKe/9tB9QDc79fPiJKQ
 github.com/gofiber/swagger v1.1.0/go.mod h1:pRZL0Np35sd+lTODTE5The0G+TMHfNY+oC4hM2/i5m8=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
+github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
 github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
 github.com/klauspost/compress v1.17.11 h1:In6xLpyWOi1+C7tXUUWv2ot1QvBjxevKAaI6IXrJmUc=
@@ -28,6 +37,8 @@ github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/magiconair/properties v1.8.7 h1:IeQXZAiQcpL9mgcAe1Nu6cX9LLw6ExEHKjN0VQdvPDY=
+github.com/magiconair/properties v1.8.7/go.mod h1:Dhd985XPs7jluiymwWYZ0G4Z61jb3vdS329zhj2hYo0=
 github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=
 github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
 github.com/makiuchi-d/gozxing v0.1.1 h1:xxqijhoedi+/lZlhINteGbywIrewVdVv2wl9r5O9S1I=
@@ -39,17 +50,47 @@ github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWE
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mattn/go-runewidth v0.0.16 h1:E5ScNMtiwvlvB5paMFdw9p4kSQzbXFikJ5SQO6TULQc=
 github.com/mattn/go-runewidth v0.0.16/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
+github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/oxplot/papersizes v0.0.0-20181201065918-90a3a5ae1915 h1:4WzMzgExTgBfuUQ/HegMf+jcHtH+c3fl7eySUQUbfzg=
 github.com/oxplot/papersizes v0.0.0-20181201065918-90a3a5ae1915/go.mod h1:LJRTnhoARxQgMyT7T9L+ZzwR4OrmyHTy5LPxZEzE1CM=
+github.com/pelletier/go-toml/v2 v2.2.2 h1:aYUidT7k73Pcl9nb2gScu7NSrKCSHIDE89b3+6Wq+LM=
+github.com/pelletier/go-toml/v2 v2.2.2/go.mod h1:1t835xjRzz80PqgE6HHgN2JOsmgYu/h4qDAS4n929Rs=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/redis/go-redis/v9 v9.7.0 h1:HhLSs+B6O021gwzl+locl0zEDnyNkxMtf/Z3NNBMa9E=
+github.com/redis/go-redis/v9 v9.7.0/go.mod h1:f6zhXITC7JUJIlPEiBOTXxJgPLdZcA93GewI7inzyWw=
 github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
 github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
 github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
 github.com/rogpeppe/go-internal v1.11.0 h1:cWPaGQEPrBb5/AsnsZesgZZ9yb1OQ+GOISoDNXVBh4M=
 github.com/rogpeppe/go-internal v1.11.0/go.mod h1:ddIwULY96R17DhadqLgMfk9H9tvdUzkipdSkR5nkCZA=
+github.com/sagikazarmark/locafero v0.4.0 h1:HApY1R9zGo4DBgr7dqsTH/JJxLTTsOt7u6keLGt6kNQ=
+github.com/sagikazarmark/locafero v0.4.0/go.mod h1:Pe1W6UlPYUk/+wc/6KFhbORCfqzgYEpgQ3O5fPuL3H4=
+github.com/sagikazarmark/slog-shim v0.1.0 h1:diDBnUNK9N/354PgrxMywXnAwEr1QZcOr6gto+ugjYE=
+github.com/sagikazarmark/slog-shim v0.1.0/go.mod h1:SrcSrq8aKtyuqEI1uvTDTK1arOWRIczQRv+GVI1AkeQ=
+github.com/sourcegraph/conc v0.3.0 h1:OQTbbt6P72L20UqAkXXuLOj79LfEanQ+YQFNpLA9ySo=
+github.com/sourcegraph/conc v0.3.0/go.mod h1:Sdozi7LEKbFPqYX2/J+iBAM6HpqSLTASQIKqDmF7Mt0=
+github.com/spf13/afero v1.11.0 h1:WJQKhtpdm3v2IzqG8VMqrr6Rf3UYpEF239Jy9wNepM8=
+github.com/spf13/afero v1.11.0/go.mod h1:GH9Y3pIexgf1MTIWtNGyogA5MwRIDXGUr+hbWNoBjkY=
+github.com/spf13/cast v1.6.0 h1:GEiTHELF+vaR5dhz3VqZfFSzZjYbgeKDpBxQVS4GYJ0=
+github.com/spf13/cast v1.6.0/go.mod h1:ancEpBxwJDODSW/UG4rDrAqiKolqNNh2DX3mk86cAdo=
+github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
+github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+github.com/spf13/viper v1.19.0 h1:RWq5SEjt8o25SROyN3z2OrDB9l7RPd3lwTWU8EcEdcI=
+github.com/spf13/viper v1.19.0/go.mod h1:GQUN9bilAbhU/jgc1bKs99f/suXKeUMct8Adx5+Ntkg=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
+github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/subosito/gotenv v1.6.0 h1:9NlTDc1FTs4qu0DDq7AEtTPNw6SVm7uBMsUCUjABIf8=
+github.com/subosito/gotenv v1.6.0/go.mod h1:Dk4QP5c2W3ibzajGcXpNraDfq2IrhjMIvMSWPKKo0FU=
 github.com/swaggo/files/v2 v2.0.1 h1:XCVJO/i/VosCDsJu1YLpdejGsGnBE9deRMpjN4pJLHk=
 github.com/swaggo/files/v2 v2.0.1/go.mod h1:24kk2Y9NYEJ5lHuCra6iVwkMjIekMCaFq/0JQj66kyM=
 github.com/swaggo/swag v1.16.4 h1:clWJtd9LStiG3VeijiCfOVODP6VpHtKdQy9ELFG3s1A=
@@ -62,6 +103,12 @@ github.com/valyala/tcplisten v1.0.0 h1:rBHj/Xf+E1tRGZyWIWwJDiRY0zc1Js+CV5DqwacVS
 github.com/valyala/tcplisten v1.0.0/go.mod h1:T0xQ8SeCZGxckz9qRXTfG43PvQ/mcWh7FwZEA7Ioqkc=
 github.com/xyproto/randomstring v1.0.5 h1:YtlWPoRdgMu3NZtP45drfy1GKoojuR7hmRcnhZqKjWU=
 github.com/xyproto/randomstring v1.0.5/go.mod h1:rgmS5DeNXLivK7YprL0pY+lTuhNQW3iGxZ18UQApw/E=
+go.uber.org/atomic v1.9.0 h1:ECmE8Bn/WFTYwEW/bpKD3M8VtR/zQVbavAoalC1PYyE=
+go.uber.org/atomic v1.9.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
+go.uber.org/multierr v1.9.0 h1:7fIwc/ZtS0q++VgcfqFDxSBZVv/Xo49/SYnDFupUwlI=
+go.uber.org/multierr v1.9.0/go.mod h1:X2jQV1h+kxSjClGpnseKVIxpmcjrj7MNnI0bnlfKTVQ=
+golang.org/x/exp v0.0.0-20230905200255-921286631fa9 h1:GoHiUyI/Tp2nVkLI2mCxVkOjsbSXD66ic0XW0js0R9g=
+golang.org/x/exp v0.0.0-20230905200255-921286631fa9/go.mod h1:S2oDrQGGwySpoQPVqRShND87VCbxmc6bL1Yd2oYrm6k=
 golang.org/x/mod v0.22.0 h1:D4nJWe9zXqHOmWqj4VMOJhvzj7bEZg4wEYa759z1pH4=
 golang.org/x/mod v0.22.0/go.mod h1:6SkKJ3Xj0I0BrPOZoBy3bdMptDDU9oJrpohJ3eWZ1fY=
 golang.org/x/sync v0.9.0 h1:fEo0HyrW1GIgZdpbhCRO0PkJajUS5H9IFUztCgEo2jQ=
@@ -70,12 +117,18 @@ golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.27.0 h1:wBqf8DvsY9Y/2P8gAfPDEYNuS30J4lPHJxXSb/nJZ+s=
 golang.org/x/sys v0.27.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.19.0 h1:kTxAhCbGbxhK0IwgSKiMO5awPoDQ0RpfiVYBfK860YM=
+golang.org/x/text v0.19.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
 golang.org/x/tools v0.27.0 h1:qEKojBykQkQ4EynWy4S8Weg69NumxKdn40Fce3uc/8o=
 golang.org/x/tools v0.27.0/go.mod h1:sUi0ZgbwW9ZPAq26Ekut+weQPR5eIM6GQLQ1Yjm1H0Q=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2/go.mod h1:K8+ghG5WaK9qNqU5K3HdILfMLy1f3aNYFI/wnl100a8=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
+gopkg.in/ini.v1 v1.67.0 h1:Dgnx+6+nfE+IfzjUEISNeydPJh9AXNNsWbGP9KzCsOA=
+gopkg.in/ini.v1 v1.67.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

handlers/barcode.go

@@ -0,0 +1,55 @@
+package handlers
+
+import (
+	"strconv"
+
+	"github.com/gofiber/fiber/v2"
+)
+
+// GenerateBarcode godoc
+//
+//	@Summary		Generate barcodes
+//	@Description	Generate barcodes based on the provided data
+//	@Tags			barcodes
+//	@Param			type	path	string	true	"Barcode type"		Enums(ean13, code128)
+//	@Param			content	path	string	true	"Barcode content"	MinLength(1)
+//	@Param			width	query	int		false	"Barcode width"		Minimum(1)	Maximum(10000) default(1000)
+//	@Param			height	query	int		false	"Barcode height"	Minimum(1)	Maximum(10000) default(1000)
+//	@Produce		image/png
+//	@Router			/v1/barcodes/{type}/{content} [get]
+func (h *DefaultHandler) GenerateBarcode(c *fiber.Ctx) error {
+
+	// Get the type and content from the URL
+	barcodeType := c.Params("type")
+	barcodeContent := c.Params("content")
+
+	// Get the width and height from the query parameters
+	widthStr := c.Query("width", "1000")
+	heightStr := c.Query("height", "1000")
+
+	// Convert width and height to integers
+	width, err := strconv.Atoi(widthStr)
+	if err != nil {
+		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
+			"error": "Invalid width parameter",
+		})
+	}
+
+	height, err := strconv.Atoi(heightStr)
+	if err != nil {
+		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
+			"error": "Invalid height parameter",
+		})
+	}
+
+	// Generate the barcode
+	barcode, err := h.BarcodeService.GenerateBarcode(barcodeType, barcodeContent, width, height)
+	if err != nil {
+		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
+			"error": err.Error(),
+		})
+	}
+
+	c.Set(fiber.HeaderContentType, "image/png")
+	return c.Send(barcode.Bytes())
+}

handlers/card.go

@@ -5,19 +5,20 @@ import (
 	"slices"
 
 	"git.odit.services/lfk/document-server/models"
-	"git.odit.services/lfk/document-server/services"
 	"github.com/gofiber/fiber/v2"
 )
 
 // GenerateCard godoc
-// @Summary Generate runner cards
+//
-// @Description Generate cards based on the provided data
+//	@Summary		Generate runner cards
-// @Tags cards
+//	@Description	Generate cards based on the provided data
-// @Accept json
+//	@Tags			pdfs
-// @Param data body models.CardRequest true "Card data"
+//	@Accept			json
-// @Produce application/pdf
+//	@Param			data	body	models.CardRequest	true	"Card data"
-// @Router /cards [post]
+//	@Produce		application/pdf
-func GenerateCard(c *fiber.Ctx) error {
+//	@Security		ApiKeyAuth
+//	@Router			/v1/pdfs/cards [post]
+func (h *DefaultHandler) GenerateCard(c *fiber.Ctx) error {
 	cardRequest := new(models.CardRequest)
 	if err := c.BodyParser(cardRequest); err != nil {
 		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
@@ -30,15 +31,14 @@ func GenerateCard(c *fiber.Ctx) error {
 		})
 	}
 
-	generator := services.DefaultTemplater{}
+	templateString, err := h.StaticService.GetTemplate(cardRequest.Locale, "card")
-	templateString, err := services.GetTemplate(cardRequest.Locale, "card")
 	if err != nil {
 		log.Println(err)
 		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
 			"error": "Template not found",
 		})
 	}
-	template, err := generator.StringToTemplate(templateString)
+	template, err := h.Templater.StringToTemplate(templateString)
 	if err != nil {
 		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
 			"error": err.Error(),
@@ -47,21 +47,21 @@ func GenerateCard(c *fiber.Ctx) error {
 
 	genConfig := &models.CardTemplateOptions{
 		CardSegments:  splitCardSegments(cardRequest.Cards),
-		EventName:     "Event name",
+		EventName:     h.Config.EventName,
-		CardSubtitle:  "Card subtitle",
+		CardSubtitle:  h.Config.CardSubtitle,
-		BarcodeFormat: "ean13",
+		BarcodeFormat: h.Config.CardBarcodeFormat,
-		BarcodePrefix: "",
+		BarcodePrefix: h.Config.CardBarcodePrefix,
 	}
 
-	result, err := generator.Execute(template, genConfig)
+	result, err := h.Templater.Execute(template, genConfig)
 	if err != nil {
 		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
 			"error": err.Error(),
 		})
 	}
 	c.Set(fiber.HeaderContentType, "text/html")
-	converter := services.GotenbergConverter{BaseUrl: "http://localhost:3001"}
+
-	pdf, err := converter.ToPdf(result, "a4", false)
+	pdf, err := h.Converter.ToPdf(result, "a4", false)
 	if err != nil {
 		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
 			"error": err.Error(),

handlers/certificate.go

@@ -5,19 +5,20 @@ import (
 	"slices"
 
 	"git.odit.services/lfk/document-server/models"
-	"git.odit.services/lfk/document-server/services"
 	"github.com/gofiber/fiber/v2"
 )
 
 // GenerateCertificate godoc
-// @Summary Generate runner certificates
+//
-// @Description Generate certificates based on the provided data
+//	@Summary		Generate runner certificates
-// @Tags certificates
+//	@Description	Generate certificates based on the provided data
-// @Accept json
+//	@Tags			pdfs
-// @Param data body models.CertificateRequest true "Certificate data"
+//	@Accept			json
-// @Produce application/pdf
+//	@Param			data	body	models.CertificateRequest	true	"Certificate data"
-// @Router /certificates [post]
+//	@Produce		application/pdf
-func GenerateCertificate(c *fiber.Ctx) error {
+//	@Security		ApiKeyAuth
+//	@Router			/v1/pdfs/certificates [post]
+func (h *DefaultHandler) GenerateCertificate(c *fiber.Ctx) error {
 	certificateRequest := new(models.CertificateRequest)
 	if err := c.BodyParser(certificateRequest); err != nil {
 		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
@@ -30,15 +31,14 @@ func GenerateCertificate(c *fiber.Ctx) error {
 		})
 	}
 
-	generator := services.DefaultTemplater{}
+	templateString, err := h.StaticService.GetTemplate(certificateRequest.Locale, "certificate")
-	templateString, err := services.GetTemplate(certificateRequest.Locale, "certificate")
 	if err != nil {
 		log.Println(err)
 		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
 			"error": "Template not found",
 		})
 	}
-	template, err := generator.StringToTemplate(templateString)
+	template, err := h.Templater.StringToTemplate(templateString)
 	if err != nil {
 		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
 			"error": err.Error(),
@@ -47,21 +47,21 @@ func GenerateCertificate(c *fiber.Ctx) error {
 
 	genConfig := &models.CertificateTemplateOptions{
 		Runners:        addUpRunnerDonations(certificateRequest.Runners),
-		EventName:      "Event name",
+		EventName:      h.Config.EventName,
-		Footer:         "Footer",
+		Footer:         h.Config.CertificateFooter,
-		CurrencySymbol: "€",
+		CurrencySymbol: h.Config.CurrencySymbol,
 		Locale:         certificateRequest.Locale,
 	}
 
-	result, err := generator.Execute(template, genConfig)
+	result, err := h.Templater.Execute(template, genConfig)
 	if err != nil {
 		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
 			"error": err.Error(),
 		})
 	}
 	c.Set(fiber.HeaderContentType, "text/html")
-	converter := services.GotenbergConverter{BaseUrl: "http://localhost:3001"}
+
-	pdf, err := converter.ToPdf(result, "a4", false)
+	pdf, err := h.Converter.ToPdf(result, "a4", false)
 	if err != nil {
 		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
 			"error": err.Error(),

handlers/contract.go

@@ -5,19 +5,20 @@ import (
 	"slices"
 
 	"git.odit.services/lfk/document-server/models"
-	"git.odit.services/lfk/document-server/services"
 	"github.com/gofiber/fiber/v2"
 )
 
 // GenerateContract godoc
-// @Summary Generate a contract
+//
-// @Description Generate a contract based on the provided data
+//	@Summary		Generate a contract
-// @Tags contracts
+//	@Description	Generate a contract based on the provided data
-// @Accept json
+//	@Tags			pdfs
-// @Param data body models.ContractRequest true "Contract data"
+//	@Accept			json
-// @Produce application/pdf
+//	@Param			data	body	models.ContractRequest	true	"Contract data"
-// @Router /contracts [post]
+//	@Produce		application/pdf
-func GenerateContract(c *fiber.Ctx) error {
+//	@Security		ApiKeyAuth
+//	@Router			/v1/pdfs/contracts [post]
+func (h *DefaultHandler) GenerateContract(c *fiber.Ctx) error {
 	contract := new(models.ContractRequest)
 	if err := c.BodyParser(contract); err != nil {
 		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
@@ -32,15 +33,14 @@ func GenerateContract(c *fiber.Ctx) error {
 
 	contract.Runners = repeatRunnerArrayItems(contract.Runners, 2)
 
-	generator := services.DefaultTemplater{}
+	templateString, err := h.StaticService.GetTemplate(contract.Locale, "contract")
-	templateString, err := services.GetTemplate(contract.Locale, "contract")
 	if err != nil {
 		log.Println(err)
 		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
 			"error": "Template not found",
 		})
 	}
-	template, err := generator.StringToTemplate(templateString)
+	template, err := h.Templater.StringToTemplate(templateString)
 	if err != nil {
 		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
 			"error": err.Error(),
@@ -49,23 +49,22 @@ func GenerateContract(c *fiber.Ctx) error {
 
 	genConfig := &models.ContractTemplateOptions{
 		Runners:              contract.Runners,
-		CurrencySymbol:       "€",
+		CurrencySymbol:       h.Config.CurrencySymbol,
-		Disclaimer:           "This is a disclaimer",
+		Disclaimer:           h.Config.SponosringDisclaimer,
-		ReceiptMinimumAmount: 10,
+		ReceiptMinimumAmount: h.Config.SponsoringReceiptMinimum,
-		EventName:            "Event name",
+		EventName:            h.Config.EventName,
-		BarcodeFormat:        "ean13",
+		BarcodeFormat:        h.Config.SponsoringBarcodeFormat,
-		BarcodePrefix:        "1",
+		BarcodePrefix:        h.Config.SponsoringBarcodePrefix,
 	}
 
-	result, err := generator.Execute(template, genConfig)
+	result, err := h.Templater.Execute(template, genConfig)
 	if err != nil {
 		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
 			"error": err.Error(),
 		})
 	}
 
-	converter := services.GotenbergConverter{BaseUrl: "http://localhost:3001"}
+	pdf, err := h.Converter.ToPdf(result, "a5", true)
-	pdf, err := converter.ToPdf(result, "a5", true)
 	if err != nil {
 		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
 			"error": err.Error(),

handlers/handlers.go

@@ -0,0 +1,22 @@
+package handlers
+
+import (
+	"git.odit.services/lfk/document-server/models"
+	"git.odit.services/lfk/document-server/services"
+	"github.com/gofiber/fiber/v2"
+)
+
+type Handler interface {
+	GenerateCard(*fiber.Ctx) error
+	GenerateContract(*fiber.Ctx) error
+	GenerateCertificate(*fiber.Ctx) error
+	GenerateBarcode(*fiber.Ctx) error
+}
+
+type DefaultHandler struct {
+	Config         *models.Config
+	BarcodeService services.BarcodeService
+	Templater      services.Templater
+	Converter      services.Converter
+	StaticService  services.StaticService
+}

handlers/util.go

@@ -2,6 +2,6 @@ package handlers
 
 import "github.com/gofiber/fiber/v2"
 
-func NotFoundHandler(c *fiber.Ctx) error {
+func (h *DefaultHandler) NotFoundHandler(c *fiber.Ctx) error {
 	return c.Status(404).SendString("Not Found")
 }

main.go

@@ -1,29 +1,109 @@
 package main
 
 import (
-	"flag"
+	"crypto/sha256"
+	"crypto/subtle"
 	"log"
 
 	"git.odit.services/lfk/document-server/docs" // Correct import path for docs
 	"git.odit.services/lfk/document-server/handlers"
+	"git.odit.services/lfk/document-server/models"
+	"git.odit.services/lfk/document-server/services"
 	"github.com/gofiber/fiber/v2"
+	"github.com/gofiber/fiber/v2/middleware/keyauth"
 	"github.com/gofiber/swagger"
+	"github.com/redis/go-redis/v9"
+	"github.com/spf13/viper"
 )
 
 var (
-	port = flag.String("port", ":3000", "Port to listen on")
+	config *models.Config
-	prod = flag.Bool("prod", false, "Enable prefork in Production")
 )
 
-// @title LfK Document Server API
+func validateAPIKey(c *fiber.Ctx, key string) (bool, error) {
-// @description This is the API documentation for the LfK Document Server - a tool for pdf generation.
+	hashedAPIKey := sha256.Sum256([]byte(config.APIKey))
+	hashedKey := sha256.Sum256([]byte(key))
+
+	if subtle.ConstantTimeCompare(hashedAPIKey[:], hashedKey[:]) == 1 {
+		return true, nil
+	}
+	return false, keyauth.ErrMissingOrMalformedAPIKey
+}
+
+func loadEnv() error {
+
+	viper.SetDefault("PORT", "3000")
+	viper.SetDefault("CARD_BARCODEFORMAT", "ean13")
+	viper.SetDefault("CARD_BARCODEPREFIX", "")
+	viper.SetDefault("SPONSORING_BARCODEFORMAT", "code128")
+	viper.SetDefault("SPONSORING_BARCODEPREFIX", "")
+
+	// Load .env file
+	viper.SetConfigFile(".env")
+
+	// Load environment variables
+	viper.AutomaticEnv()
+	err := viper.ReadInConfig()
+	if err != nil {
+		log.Println("No .env file found")
+	}
+
+	// Unmarshal the config from file and env into the config struct
+	err = viper.Unmarshal(&config)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// @title						LfK Document Server API
+// @description				This is the API documentation for the LfK Document Server - a tool for pdf generation.
+// @license.name				CC BY-NC-SA 4.0
+// @termsOfService				https://lauf-fuer-kaya.de/datenschutz
+// @contact.name				ODIT.Services UG (haftungsbeschränkt)
+// @contact.url				https://odit.services
+// @contact.email				info@odit.services
+// @securityDefinitions.apiKey	ApiKeyAuth
+// @in							query
+// @name						key
 func main() {
-	// Parse command-line flags
+
-	flag.Parse()
+	err := loadEnv()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	var redisClient *redis.Client
+	if config.RedisAddr != "" {
+		log.Println("Using redis at", config.RedisAddr)
+		redisClient = redis.NewClient(&redis.Options{
+			Addr: config.RedisAddr,
+		})
+	}
+
+	barcodeGenerator := &services.DefaultBarcodeService{
+		RedisClient: redisClient,
+	}
+	staticService := &services.DefaultStaticService{
+		Cache: make(map[string]string),
+	}
+	handler := handlers.DefaultHandler{
+		Config:         config,
+		BarcodeService: barcodeGenerator,
+		StaticService:  staticService,
+		Templater: &services.DefaultTemplater{
+			BarcodeService: barcodeGenerator,
+			StaticService:  staticService,
+		},
+		Converter: &services.GotenbergConverter{
+			BaseUrl: config.GotenbergBaseUrl,
+		},
+	}
 
 	// Create a new Fiber instance
 	app := fiber.New(fiber.Config{
-		Prefork: *prod,
+		Prefork: config.Prod,
 	})
 
 	// Swagger documentation route
@@ -31,15 +111,20 @@ func main() {
 
 	v1 := app.Group("/v1")
 
-	v1.Get("/", func(c *fiber.Ctx) error {
+	pdfv1 := v1.Group("/pdfs")
-		return c.SendString("Hello, World!")
+	pdfv1.Use(keyauth.New(keyauth.Config{
-	})
+		KeyLookup: "query:key",
-	v1.Post("/contracts", handlers.GenerateContract)
+		Validator: validateAPIKey,
-	v1.Post("/cards", handlers.GenerateCard)
+	}))
-	v1.Post("/certificates", handlers.GenerateCertificate)
 
-	app.Use(handlers.NotFoundHandler)
+	pdfv1.Post("/contracts", handler.GenerateContract)
+	pdfv1.Post("/cards", handler.GenerateCard)
+	pdfv1.Post("/certificates", handler.GenerateCertificate)
+
+	v1.Get("/barcodes/:type/:content", handler.GenerateBarcode)
+
+	app.Use(handler.NotFoundHandler)
 	docs.SwaggerInfo.BasePath = "/"
 
-	log.Fatal(app.Listen(*port))
+	log.Fatal(app.Listen("0.0.0.0:" + config.Port))
 }

models/config.go

@@ -0,0 +1,19 @@
+package models
+
+type Config struct {
+	Prod                     bool   `mapstructure:"PRODUCION"`
+	Port                     string `mapstructure:"PORT"`
+	APIKey                   string `mapstructure:"APIKEY"`
+	EventName                string `mapstructure:"EVENTNAME"`
+	CurrencySymbol           string `mapstructure:"CURRENCYSYMBOL"`
+	CardSubtitle             string `mapstructure:"CARD_SUBTITLE"`
+	CardBarcodeFormat        string `mapstructure:"CARD_BARCODEFORMAT"`
+	CardBarcodePrefix        string `mapstructure:"CARD_BARCODEPREFIX"`
+	SponsoringReceiptMinimum int    `mapstructure:"SPONSOING_RECEIPTMINIMUM"`
+	SponosringDisclaimer     string `mapstructure:"SPONSORING_DISCLAIMER"`
+	SponsoringBarcodeFormat  string `mapstructure:"SPONSORING_BARCODEFORMAT"`
+	SponsoringBarcodePrefix  string `mapstructure:"SPONSORING_BARCODEPREFIX"`
+	CertificateFooter        string `mapstructure:"CERTIFICATE_FOOTER"`
+	GotenbergBaseUrl         string `mapstructure:"GOTENBERG_BASEURL"`
+	RedisAddr                string `mapstructure:"REDIS_ADDR"`
+}

models/contract.go

@@ -25,7 +25,6 @@ type ContractTemplateOptions struct {
 	Disclaimer           string   `json:"disclaimer"`
 	ReceiptMinimumAmount int      `json:"receipt_minimum_amount"`
 	EventName            string   `json:"event_name"`
-	SponsoringHeader     string   `json:"base_url"`
 	BarcodeFormat        string   `json:"barcode_format"`
 	BarcodePrefix        string   `json:"barcode_prefix"`
 }

services/barcode.go

@@ -0,0 +1,93 @@
+package services
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"image/png"
+	"log"
+	"slices"
+	"time"
+
+	"github.com/boombuler/barcode"
+	"github.com/boombuler/barcode/code128"
+	"github.com/boombuler/barcode/ean"
+	"github.com/boombuler/barcode/qr"
+	"github.com/redis/go-redis/v9"
+)
+
+type BarcodeService interface {
+	GenerateBarcode(format string, content string, width int, height int) (bytes.Buffer, error)
+	IsTypeSupported(format string) bool
+}
+
+type DefaultBarcodeService struct {
+	RedisClient *redis.Client
+}
+
+func (b *DefaultBarcodeService) GenerateBarcode(format string, content string, width int, height int) (bytes.Buffer, error) {
+	ctx := context.Background()
+
+	if !b.IsTypeSupported(format) {
+		return bytes.Buffer{}, fmt.Errorf("unsupported barcode type: %s", format)
+	}
+
+	if b.RedisClient != nil {
+		cachedBarcode, err := b.RedisClient.Get(ctx, fmt.Sprintf("barcode:%s:%s:%d:%d", format, content, width, height)).Result()
+		if err == nil {
+			log.Printf("Cache hit for barcode:%s:%s:%d:%d", format, content, width, height)
+			buf := bytes.Buffer{}
+			buf.Write([]byte(cachedBarcode))
+			return buf, nil
+		}
+	}
+
+	var generatedCode barcode.Barcode
+	var err error
+
+	switch format {
+	case "ean13":
+		generatedCode, err = ean.Encode(content)
+		if err != nil {
+			return bytes.Buffer{}, err
+		}
+		break
+	case "code128":
+		generatedCode, err = code128.Encode(content)
+		if err != nil {
+			return bytes.Buffer{}, err
+		}
+		break
+	case "qr":
+		generatedCode, err = qr.Encode(content, qr.M, qr.AlphaNumeric)
+		if err != nil {
+			return bytes.Buffer{}, err
+		}
+		break
+	}
+
+	scaledCode, err := barcode.Scale(generatedCode, width, height)
+	if err != nil {
+		return bytes.Buffer{}, err
+	}
+
+	var buf bytes.Buffer
+	err = png.Encode(&buf, scaledCode)
+	if err != nil {
+		return bytes.Buffer{}, err
+	}
+
+	if b.RedisClient != nil {
+		err = b.RedisClient.Set(ctx, fmt.Sprintf("barcode:%s:%s:%d:%d", format, content, width, height), buf.String(), 10*time.Minute).Err()
+		if err != nil {
+			return bytes.Buffer{}, err
+		}
+	}
+
+	return buf, nil
+}
+
+func (b *DefaultBarcodeService) IsTypeSupported(format string) bool {
+	supportedTypes := []string{"ean13", "code128", "qr"}
+	return slices.Contains(supportedTypes, format)
+}

services/templater.go

@@ -6,13 +6,7 @@ import (
 	"errors"
 	"fmt"
 	"html/template"
-	"image/png"
 	"strings"
-
-	"github.com/boombuler/barcode"
-	"github.com/boombuler/barcode/code128"
-	"github.com/boombuler/barcode/ean"
-	"github.com/boombuler/barcode/qr"
 )
 
 type Templater interface {
@@ -21,6 +15,8 @@ type Templater interface {
 }
 
 type DefaultTemplater struct {
+	BarcodeService BarcodeService
+	StaticService  StaticService
 }
 
 func idToEan13(id string, prefix string) (string, error) {
@@ -37,61 +33,30 @@ func idToEan13(id string, prefix string) (string, error) {
 }
 
 func (t *DefaultTemplater) GenerateBarcode(code string, format string, prefix string) (string, error) {
-	var generatedCode barcode.Barcode
 	var err error
 
-	switch format {
+	if format == "ean13" {
-	case "ean13":
+		code, err = idToEan13(code, prefix)
-		encodedEan, err := idToEan13(code, prefix)
 		if err != nil {
 			return "", err
 		}
-		generatedCode, err = ean.Encode(encodedEan)
-		if err != nil {
-			return "", err
-		}
-		break
-	case "code128":
-		generatedCode, err = code128.Encode(prefix + code)
-		if err != nil {
-			return "", err
-		}
-		break
-	case "qr":
-		generatedCode, err = qr.Encode(prefix+code, qr.M, qr.AlphaNumeric)
-		if err != nil {
-			return "", err
-		}
-		break
-	default:
-		return "", errors.New("unknown barcode format")
 	}
 
-	scaledCode, err := barcode.Scale(generatedCode, 1000, 500)
+	buf, err := t.BarcodeService.GenerateBarcode(format, code, 1000, 500)
-	if err != nil {
-		return "", err
-	}
 
-	var buf bytes.Buffer
+	return base64.StdEncoding.EncodeToString(buf.Bytes()), err
-	err = png.Encode(&buf, scaledCode)
-	if err != nil {
-		return "", err
-	}
-
-	return base64.StdEncoding.EncodeToString(buf.Bytes()), nil
 }
 
 func (t *DefaultTemplater) SelectSponsorImage(id int) (string, error) {
-	sponsors := []string{
+	sponsors, err := t.StaticService.ListFilesInStaticSubFolder("images/sponsors")
-		"vrbank",
+	if err != nil {
-		"odit",
+		return "", err
-		"sparkasse",
 	}
-	return GetImage(sponsors[id%len(sponsors)]), nil
+	return t.StaticService.GetImage("sponsors/" + strings.TrimSuffix(sponsors[id%len(sponsors)], ".base64")), nil
 }
 
 func (t *DefaultTemplater) LoadImage(name string) (string, error) {
-	return GetImage(name), nil
+	return t.StaticService.GetImage(name), nil
 }
 
 func (t *DefaultTemplater) FormatUnit(unit string, locale string, amount int) (string, error) {

services/templates.go

@@ -7,16 +7,51 @@ import (
 	"os"
 )
 
-func GetTemplate(locale, templateName string) (string, error) {
+type StaticService interface {
+	GetTemplate(locale, templateName string) (string, error)
+	ListFilesInStaticSubFolder(folderName string) ([]string, error)
+	GetImage(imageName string) string
+}
+
+type DefaultStaticService struct {
+	Cache map[string]string
+}
+
+func (s *DefaultStaticService) GetTemplate(locale, templateName string) (string, error) {
+
+	if s.Cache[locale+templateName] != "" {
+		log.Printf("returning cached template %s with locale %s", templateName, locale)
+		return s.Cache[locale+templateName], nil
+	}
+
 	content, err := os.ReadFile(fmt.Sprintf("static/templates/%s/%s.html", templateName, locale))
 	if content == nil || err != nil {
 		log.Printf("error reading template %s with locale %s: %v", templateName, locale, err)
 		return "", err
 	}
+
+	s.Cache[locale+templateName] = string(content)
+
 	return string(content), nil
 }
 
-func GetImage(imageName string) string {
+func (s *DefaultStaticService) ListFilesInStaticSubFolder(folderName string) ([]string, error) {
+	files, err := os.ReadDir(fmt.Sprintf("static/%s", folderName))
+	if err != nil {
+		log.Printf("error reading files from folder %s: %v", folderName, err)
+		return nil, err
+	}
+	var images []string
+	for _, file := range files {
+		if file.IsDir() {
+			continue
+		}
+		images = append(images, file.Name())
+	}
+	return images, nil
+}
+
+func (s *DefaultStaticService) GetImage(imageName string) string {
 	content, err := os.ReadFile("static/images/" + imageName + ".base64")
 	if content == nil || err != nil {
 		log.Printf("error reading image %s: %v", imageName, err)

static/templates/certificate/de.html

@@ -12,7 +12,7 @@
       box-sizing: border-box;
       page-break-after: always;
       padding: 1.2cm 2cm 1.2cm 2cm;
-      background-image: url("data:image/png;base64,{{ loadImage 'certificate_background' }}");
+      background-image: url("data:image/png;base64,{{ loadImage "certificate_background" }}");
       background-repeat: no-repeat;
       background-size: 11cm;
       background-position: 5cm 5cm;

static/templates/certificate/en.html

@@ -12,7 +12,7 @@
       box-sizing: border-box;
       page-break-after: always;
       padding: 1.2cm 2cm 1.2cm 2cm;
-      background-image: url("data:image/png;base64,{{ loadImage 'certificate_background' }}");
+      background-image: url("data:image/png;base64,{{ loadImage "certificate_background" }}");
       background-repeat: no-repeat;
       background-size: 11cm;
       background-position: 5cm 5cm;