feat(handlers): Implemented contracts generation

.air.toml

@@ -0,0 +1,46 @@
+root = "."
+testdata_dir = "testdata"
+tmp_dir = "tmp"
+
+[build]
+  args_bin = []
+  bin = "tmp\\main.exe"
+  cmd = "go build -o ./tmp/main.exe ."
+  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

docker-compose.yaml

@@ -0,0 +1,5 @@
+services:
+  gotenberg:
+    image: gotenberg/gotenberg:8
+    ports:
+      - "3001:3000"

docs/docs.go

@@ -47,6 +47,13 @@ const docTemplate = `{
         "models.Contract": {
             "type": "object",
             "properties": {
+                "locale": {
+                    "type": "string",
+                    "enum": [
+                        "en",
+                        "de"
+                    ]
+                },
                 "runners": {
                     "type": "array",
                     "items": {

docs/swagger.json

@@ -38,6 +38,13 @@
         "models.Contract": {
             "type": "object",
             "properties": {
+                "locale": {
+                    "type": "string",
+                    "enum": [
+                        "en",
+                        "de"
+                    ]
+                },
                 "runners": {
                     "type": "array",
                     "items": {

docs/swagger.yaml

@@ -1,6 +1,11 @@
 definitions:
   models.Contract:
     properties:
+      locale:
+        enum:
+        - en
+        - de
+        type: string
       runners:
         items:
           $ref: '#/definitions/models.Runner'

go.mod

@@ -1,18 +1,22 @@
 module git.odit.services/lfk/document-server
 
-go 1.22.1
+go 1.23.2
+
+toolchain go1.23.3
+
+require (
+	github.com/gofiber/fiber/v2 v2.52.5
+	github.com/gofiber/swagger v1.1.0
+	github.com/swaggo/swag v1.16.4
+)
 
 require (
 	github.com/KyleBanks/depth v1.2.1 // indirect
-	github.com/PuerkitoBio/purell v1.2.1 // indirect
-	github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 // indirect
 	github.com/andybalholm/brotli v1.1.1 // 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/gofiber/fiber/v2 v2.52.5 // indirect
-	github.com/gofiber/swagger v1.1.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/klauspost/compress v1.17.11 // indirect
@@ -20,16 +24,13 @@ require (
 	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/oxplot/papersizes v0.0.0-20181201065918-90a3a5ae1915 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/swaggo/files/v2 v2.0.1 // indirect
-	github.com/swaggo/swag v1.16.4 // 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
-	golang.org/x/net v0.31.0 // indirect
 	golang.org/x/sys v0.27.0 // indirect
-	golang.org/x/text v0.20.0 // indirect
 	golang.org/x/tools v0.27.0 // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,13 +1,8 @@
 github.com/KyleBanks/depth v1.2.1 h1:5h8fQADFrWtarTdtDudMmGsC7GPbOAu6RVB3ffsVFHc=
 github.com/KyleBanks/depth v1.2.1/go.mod h1:jzSb9d0L43HxTQfT+oSA1EEp2q+ne2uh6XgeJcm8brE=
-github.com/PuerkitoBio/purell v1.2.1 h1:QsZ4TjvwiMpat6gBCBxEQI0rcS9ehtkKtSpiUnd9N28=
-github.com/PuerkitoBio/purell v1.2.1/go.mod h1:ZwHcC/82TOaovDi//J/804umJFFmbOHPngi8iYYv/Eo=
-github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 h1:d+Bc7a5rLufV/sSk/8dngufqelfh6jnri85riMAaF/M=
-github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
-github.com/andybalholm/brotli v1.0.5 h1:8uQZIdzKmjc/iuPu7O2ioW48L81FgatrcpfFmiq/cCs=
-github.com/andybalholm/brotli v1.0.5/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
 github.com/andybalholm/brotli v1.1.1 h1:PR2pgnyFznKEugtsUo0xLdDop5SKXd5Qf5ysW+7XdTA=
 github.com/andybalholm/brotli v1.1.1/go.mod h1:05ib4cKhjx3OQYUY22hTVd34Bc8upXjOLL2rKwwZBoA=
+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/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=
@@ -21,16 +16,15 @@ github.com/gofiber/fiber/v2 v2.52.5 h1:tWoP1MJQjGEe4GB5TUGOi7P2E0ZMMRx5ZTG4rT+yG
 github.com/gofiber/fiber/v2 v2.52.5/go.mod h1:KEOE+cXMhXG0zHc9d8+E38hoX+ZN7bhOtgeF2oT6jrQ=
 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 v1.5.0 h1:1p67kYwdtXjb0gL0BPiP1Av9wiZPo5A8z2cWkTZ+eyU=
-github.com/google/uuid v1.5.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 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/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 v1.17.0 h1:Rnbp4K9EjcDuVuHtd0dgA4qNuv9yKDYKK1ulpJwgrqM=
-github.com/klauspost/compress v1.17.0/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
 github.com/klauspost/compress v1.17.11 h1:In6xLpyWOi1+C7tXUUWv2ot1QvBjxevKAaI6IXrJmUc=
 github.com/klauspost/compress v1.17.11/go.mod h1:pMDklpSncoRMuLFrf1W9Ss9KT+0rH90U12bZKk7uwG0=
+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/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=
 github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
@@ -39,42 +33,43 @@ github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovk
 github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
-github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
-github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 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/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/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
 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/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/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=
 github.com/swaggo/swag v1.16.4/go.mod h1:VBsHJRsDvfYvqoiMKnsdwhNV9LEMHgEDZcyVYX0sxPg=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
-github.com/valyala/fasthttp v1.51.0 h1:8b30A5JlZ6C7AS81RsWjYMQmrZG6feChmgAolCl1SqA=
-github.com/valyala/fasthttp v1.51.0/go.mod h1:oI2XroL+lI7vdXyYoQk03bXBThfFl2cVdIA3Xl7cH8g=
 github.com/valyala/fasthttp v1.57.0 h1:Xw8SjWGEP/+wAAgyy5XTvgrWlOD1+TxbbvNADYCm1Tg=
 github.com/valyala/fasthttp v1.57.0/go.mod h1:h6ZBaPRlzpZ6O3H5t2gEk1Qi33+TmLvfwgLLp0t9CpE=
 github.com/valyala/tcplisten v1.0.0 h1:rBHj/Xf+E1tRGZyWIWwJDiRY0zc1Js+CV5DqwacVSA8=
 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=
-golang.org/x/net v0.31.0 h1:68CPQngjLL0r2AlUKiSxtQFKvzRVbnzLwMUn5SzcLHo=
+golang.org/x/mod v0.22.0 h1:D4nJWe9zXqHOmWqj4VMOJhvzj7bEZg4wEYa759z1pH4=
-golang.org/x/net v0.31.0/go.mod h1:P4fl1q7dY2hnZFxEk4pPSkDHF+QqjitcnDjUQyMM+pM=
+golang.org/x/mod v0.22.0/go.mod h1:6SkKJ3Xj0I0BrPOZoBy3bdMptDDU9oJrpohJ3eWZ1fY=
+golang.org/x/sync v0.9.0 h1:fEo0HyrW1GIgZdpbhCRO0PkJajUS5H9IFUztCgEo2jQ=
+golang.org/x/sync v0.9.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.15.0 h1:h48lPFYpsTvQJZF4EKyI4aLHaev3CxivZmv7yZig9pc=
-golang.org/x/sys v0.15.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 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 v0.20.0 h1:gK/Kv2otX8gz+wn7Rmb3vT96ZwuoxnQlY+HlJVj7Qug=
-golang.org/x/text v0.20.0/go.mod h1:D4IsuqiFMhST5bX19pQ9ikHC2GsaKyk/oF+pn3ducp4=
 golang.org/x/tools v0.27.0 h1:qEKojBykQkQ4EynWy4S8Weg69NumxKdn40Fce3uc/8o=
 golang.org/x/tools v0.27.0/go.mod h1:sUi0ZgbwW9ZPAq26Ekut+weQPR5eIM6GQLQ1Yjm1H0Q=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
-gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

handlers/contract.go

@@ -2,8 +2,11 @@ package handlers
 
 import (
 	"log"
+	"slices"
 
 	"git.odit.services/lfk/document-server/models"
+	"git.odit.services/lfk/document-server/services"
+	"git.odit.services/lfk/document-server/templates"
 	"github.com/gofiber/fiber/v2"
 )
 
@@ -22,6 +25,51 @@ func GenerateContract(c *fiber.Ctx) error {
 			"error": err.Error(),
 		})
 	}
-	log.Println(contract.Runners[0].Group.ParentGroup)
+	if !slices.Contains([]string{"en", "de"}, contract.Locale) {
-	return c.SendString("Contract generated")
+		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
+			"error": "Invalid locale",
+		})
+	}
+
+	var duplicates int = 2
+	var duplicatedRunners []models.Runner
+	for _, runner := range contract.Runners {
+		for i := 0; i < duplicates; i++ {
+			duplicatedRunners = append(duplicatedRunners, runner)
+		}
+	}
+	contract.Runners = duplicatedRunners
+
+	generator := services.DefaultTemplater{}
+	template, err := templates.GetTemplate(contract.Locale, "contract")
+	if err != nil {
+		log.Println(err)
+		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
+			"error": "Template not found",
+		})
+	}
+	result, err := generator.Execute(template, &services.ContractTemplateOptions{
+		Runners:              contract.Runners,
+		CurrencySymbol:       "€",
+		Disclaimer:           "This is a disclaimer",
+		ReceiptMinimumAmount: 10,
+		EventName:            "Event name",
+		SponsoringHeader:     templates.ImageSponsoringHeaderBase64,
+	})
+	if err != nil {
+		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
+			"error": err.Error(),
+		})
+	}
+
+	converter := services.GotenbergConverter{BaseUrl: "http://localhost:3001"}
+	pdf, err := converter.ToPdf(result, "a5", true)
+	if err != nil {
+		return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
+			"error": err.Error(),
+		})
+	}
+
+	c.Set(fiber.HeaderContentType, "application/pdf")
+	return c.Send(pdf)
 }

models/contract.go

@@ -2,6 +2,7 @@ package models
 
 type Contract struct {
 	Runners []Runner `json:"runners"`
+	Locale  string   `json:"locale" enums:"en,de"`
 }
 
 type Runner struct {

services/converter.go

@@ -0,0 +1,107 @@
+package services
+
+import (
+	"bytes"
+	"fmt"
+	"mime/multipart"
+	"net/http"
+	"strconv"
+
+	"github.com/oxplot/papersizes"
+)
+
+type Converter interface {
+	ToPdf(html string, pageSize string, landscape bool) ([]byte, error)
+}
+
+type GotenbergConverter struct {
+	BaseUrl string
+}
+
+func (g *GotenbergConverter) ToPdf(html string, pageSize string, landscape bool) ([]byte, error) {
+	client := &http.Client{}
+	defer client.CloseIdleConnections()
+
+	body := &bytes.Buffer{}
+	writer := multipart.NewWriter(body)
+
+	part, err := writer.CreateFormFile("files", "index.html")
+	if err != nil {
+		return nil, err
+	}
+
+	_, err = part.Write([]byte(html))
+	if err != nil {
+		return nil, err
+	}
+
+	size := papersizes.FromName(pageSize)
+	if size == nil {
+		return nil, fmt.Errorf("invalid page size: %s", pageSize)
+	}
+
+	err = writer.WriteField("paperWidth", strconv.Itoa(size.Width)+"mm")
+	if err != nil {
+		return nil, err
+	}
+
+	err = writer.WriteField("paperHeight", strconv.Itoa(size.Height)+"mm")
+	if err != nil {
+		return nil, err
+	}
+
+	err = writer.WriteField("landscape", strconv.FormatBool(landscape))
+	if err != nil {
+		return nil, err
+	}
+
+	err = writer.WriteField("marginTop", "0")
+	if err != nil {
+		return nil, err
+	}
+
+	err = writer.WriteField("marginBottom", "0")
+	if err != nil {
+		return nil, err
+	}
+
+	err = writer.WriteField("marginLeft", "0")
+	if err != nil {
+		return nil, err
+	}
+
+	err = writer.WriteField("marginRight", "0")
+	if err != nil {
+		return nil, err
+	}
+
+	err = writer.WriteField("preferCssPageSize", "true")
+	if err != nil {
+		return nil, err
+	}
+
+	err = writer.Close()
+	if err != nil {
+		return nil, err
+	}
+
+	req, err := http.NewRequest("POST", g.BaseUrl+"/forms/chromium/convert/html", body)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Content-Type", writer.FormDataContentType())
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+
+	defer resp.Body.Close()
+	data := new(bytes.Buffer)
+	_, err = data.ReadFrom(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	return data.Bytes(), nil
+}

services/templater.go

@@ -0,0 +1,35 @@
+package services
+
+import (
+	"bytes"
+	"html/template"
+
+	"git.odit.services/lfk/document-server/models"
+)
+
+type Templater interface {
+	Execute(template *template.Template, data interface{}) (string, error)
+}
+
+type DefaultTemplater struct {
+}
+
+type ContractTemplateOptions struct {
+	Runners              []models.Runner `json:"runners"`
+	CurrencySymbol       string          `json:"currency_symbol"`
+	Disclaimer           string          `json:"disclaimer"`
+	ReceiptMinimumAmount int             `json:"receipt_minimum_amount"`
+	EventName            string          `json:"event_name"`
+	SponsoringHeader     string          `json:"base_url"`
+}
+
+func (t *DefaultTemplater) Execute(template *template.Template, data interface{}) (string, error) {
+	resultBuffer := new(bytes.Buffer)
+
+	err := template.Execute(resultBuffer, data)
+	if err != nil {
+		return "", err
+	}
+
+	return resultBuffer.String(), nil
+}

templates/card/de.html

@@ -0,0 +1,71 @@
+<html>
+
+<head>
+  <meta charset="utf8">
+  <title>Sponsoring contract</title>
+  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bulma@0.9.1/css/bulma.min.css">
+  <style>
+    .sheet {
+      margin: 0;
+      overflow: hidden;
+      position: relative;
+      box-sizing: border-box;
+      page-break-after: always;
+      padding: 1.2cm 2cm 1.2cm 2cm
+    }
+
+    body.A4 .sheet {
+      width: 210mm;
+      height: 296mm
+    }
+
+    .runnercard {
+      border: 1px solid;
+      height: 5.5cm;
+      overflow: hidden;
+    }
+  </style>
+</head>
+
+<body class="A4 landscape">
+  <div class="sheet">
+    <div class="columns is-multiline">
+      {{#each cards}}
+      <div class="column is-half runnercard">
+        <p class="title is-5" style="text-align: center; padding-bottom: 0; margin-top: -0.75rem;">{{../eventname}}</p>
+        <p style="text-align: center; margin-top: -1.5rem; font-size: small;">{{../card_subtitle}}</p>
+        <p style="font-size: small;">Mit Unterstützung von:</p>
+        <div class="columns" style="height: 6rem; overflow: hidden;">
+          <div class="column is-half">
+            <!--SPONSOR LOGO HERE-->
+            <img style="vertical-align: revert; margin-top: auto; object-fit: cover; max-height: 2cm;"
+              src="{{--sponsor this.id}}" />
+          </div>
+          <div class="column is-half">
+            <!--BARCODE HERE-->
+            <img style="vertical-align: revert; margin-top: auto; object-fit: cover; max-height: 2cm;"
+              src="{{--bc this.code ../codeformat}}" />
+          </div>
+        </div>
+        <p>{{this.runner.lastname}}, {{this.runner.firstname}} {{this.runner.middlename}}</p>
+        <p>{{this.runner.group.fullName}}</p>
+      </div>
+      {{/each}}
+    </div>
+  </div>
+  <div class="sheet">
+    <div class="columns is-multiline">
+      {{#each cards_swapped}}
+      <div class="column is-half runnercard" style="justify-content: center; align-items: center; text-align: center;">
+        <!--SPONSOR LOGO FIRST-->
+        <div style="height: 2cm; padding: 0 0 2.25cm 0">
+          <img style="object-fit: cover; max-height: 2cm;" src="{{--sponsor this.id}}" />
+        </div>
+        <img style="object-fit: cover; max-height: 2.5cm; position: relative;" src="{{--bc this.code ../codeformat}}" />
+      </div>
+      {{/each}}
+    </div>
+  </div>
+</body>
+
+</html>

templates/card/en.html

@@ -0,0 +1,71 @@
+<html>
+
+<head>
+  <meta charset="utf8">
+  <title>Sponsoring contract</title>
+  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bulma@0.9.1/css/bulma.min.css">
+  <style>
+    .sheet {
+      margin: 0;
+      overflow: hidden;
+      position: relative;
+      box-sizing: border-box;
+      page-break-after: always;
+      padding: 1.2cm 2cm 1.2cm 2cm
+    }
+
+    body.A4 .sheet {
+      width: 210mm;
+      height: 296mm
+    }
+
+    .runnercard {
+      border: 1px solid;
+      height: 5.5cm;
+      overflow: hidden;
+    }
+  </style>
+</head>
+
+<body class="A4 landscape">
+  <div class="sheet">
+    <div class="columns is-multiline">
+      {{#each cards}}
+      <div class="column is-half runnercard">
+        <p class="title is-5" style="text-align: center; padding-bottom: 0; margin-top: -0.75rem;">{{../eventname}}</p>
+        <p style="text-align: center; margin-top: -1.5rem; font-size: small;">{{../card_subtitle}}</p>
+        <p style="font-size: small;">Supported by:</p>
+        <div class="columns" style="height: 6rem; overflow: hidden;">
+          <div class="column is-half">
+            <!--SPONSOR LOGO HERE-->
+            <img style="vertical-align: revert; margin-top: auto; object-fit: cover; max-height: 2cm;"
+              src="{{--sponsor this.id}}" />
+          </div>
+          <div class="column is-half">
+            <!--BARCODE HERE-->
+            <img style="vertical-align: revert; margin-top: auto; object-fit: cover; max-height: 2cm;"
+              src="{{--bc this.code ../codeformat}}" />
+          </div>
+        </div>
+        <p>{{this.runner.lastname}}, {{this.runner.firstname}} {{this.runner.middlename}}</p>
+        <p>{{this.runner.group.fullName}}</p>
+      </div>
+      {{/each}}
+    </div>
+  </div>
+  <div class="sheet">
+    <div class="columns is-multiline">
+      {{#each cards_swapped}}
+      <div class="column is-half runnercard" style="justify-content: center; align-items: center; text-align: center;">
+        <!--SPONSOR LOGO FIRST-->
+        <div style="height: 2cm; padding: 0 0 2.25cm 0">
+          <img style="object-fit: cover; max-height: 2cm;" src="{{--sponsor this.id}}" />
+        </div>
+        <img style="object-fit: cover; max-height: 2.5cm; position: relative;" src="{{--bc this.code ../codeformat}}" />
+      </div>
+      {{/each}}
+    </div>
+  </div>
+</body>
+
+</html>

templates/contract/de.html

@@ -0,0 +1,124 @@
+<html>
+
+<head>
+  <meta charset="utf8">
+  <title>Sponsoring contract</title>
+  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bulma@0.9.1/css/bulma.min.css">
+  <style>
+    .sheet {
+      margin: 0;
+      overflow: hidden;
+      position: relative;
+      box-sizing: border-box;
+      page-break-after: always;
+    }
+
+    body.A5.landscape .sheet {
+      width: 210mm;
+      height: 147mm
+    }
+
+    .column {
+      margin-bottom: -20;
+    }
+  </style>
+</head>
+
+<body class="A5 landscape">
+  {{ range .Runners }}
+  <div class="sheet">
+    <img id="header_img" width="100%" src="data:image/png;base64,{{ $.SponsoringHeader}}" />
+    <div style=" padding: 0 1rem 0 1rem;">
+      <div class="columns">
+        <div class="column is-10">
+          <div class="columns" style="padding-bottom: 0;">
+            <div class="column is-two-fifths">
+              <p style="font-size: large; font-weight: bold;">Sponsoringerklärung</p>
+            </div>
+            <div class="column">
+              <p style="font-size: x-small; vertical-align: revert; margin-top: auto;">Bitte in DRUCKBUCHSTABEN
+                schreiben
+              </p>
+            </div>
+          </div>
+          <p>Ich bin/ Wir sind bereit anlässlich des {{ $.EventName }}</p>
+          <div class="columns">
+            <div class="column is-9">
+              <span style="border-bottom: 1px solid; width: 100%; display: block;">{{ .FirstName }}
+                {{ .MiddleName }}</span>
+              <p style="font-size: x-small; display: block;">Vorname</p>
+            </div>
+            <div class="column is-3">
+              <span style="border-bottom: 1px solid; width: 100%; display: block;">{{ .ID }}</span>
+              <p style="font-size: x-small; display: block;">ID</p>
+            </div>
+          </div>
+        </div>
+        <div class="column">
+          <img style="vertical-align: revert; margin-top: auto; object-fit: cover; max-height: 2cm;"
+            src="{{/* TODO: BARCODE*/}}" />
+        </div>
+      </div>
+      <div class="columns" style="padding-top: 1rem;">
+        <div class="column is-6">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;">{{ .LastName }}</span>
+          <p style="font-size: x-small; display: block;">Nachname</p>
+        </div>
+        <div class="column is-6">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;">{{ .Group.Name }}</span>
+          <p style="font-size: x-small; display: block;">Team/ Klasse</p>
+        </div>
+      </div>
+      <p style="margin-top: -0.5rem">mit einem Betrag von _____ {{ $.CurrencySymbol }} pro gelaufenem Kilometer zu
+        unterstützen.</p>
+      <div class="columns" style="margin-top: -1rem;">
+        <div class="column is-6">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;"> </span>
+          <p style="font-size: x-small; display: block;">Nachname</p>
+        </div>
+        <div class="column is-6">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;"> </span>
+          <p style="font-size: x-small; display: block;">Vorname</p>
+        </div>
+      </div>
+      <p style="font-size: medium; margin-top: -0.5rem;">Adresse (Sponsor)</p>
+      <p style="font-size: x-small;">(Muss ausgefüllt werden, wenn Sie eine Spendenquittung benötigen -
+        Spendenquittungen können erst ab einem Gesamtbetrag von {{ $.ReceiptMinimumAmount }}{{ $.CurrencySymbol }}
+        ausgestellt werden)</p>
+      <div class="columns" style="margin-top: -1rem;">
+        <div class="column is-8">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;"> </span>
+          <p style="font-size: x-small; display: block;">Straße</p>
+        </div>
+        <div class="column is-4">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;"> </span>
+          <p style="font-size: x-small; display: block;">Hausnummer</p>
+        </div>
+      </div>
+      <div class="columns" style="margin-top: -1rem;">
+        <div class="column is-4">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;"> </span>
+          <p style="font-size: x-small; display: block;">Postleitzahl</p>
+        </div>
+        <div class="column is-8">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;"> </span>
+          <p style="font-size: x-small; display: block;">Stadt</p>
+        </div>
+      </div>
+      <div class="columns" style="margin-top: -1rem;">
+        <div class="column is-7">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;"> </span>
+          <p style="font-size: x-small; display: block;">Ort, Datum</p>
+        </div>
+        <div class="column is-5">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;"> </span>
+          <p style="font-size: x-small; display: block;">Unterschrift</p>
+        </div>
+      </div>
+      <p style="font-size: xx-small; overflow: hidden; height: 4rem; text-align: center;"> {{ $.Disclaimer }}</p>
+    </div>
+  </div>
+  {{ end }}
+</body>
+
+</html>

templates/contract/en.html

@@ -0,0 +1,120 @@
+<html>
+
+<head>
+  <meta charset="utf8">
+  <title>Sponsoring contract</title>
+  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bulma@0.9.1/css/bulma.min.css">
+  <style>
+    .sheet {
+      margin: 0;
+      overflow: hidden;
+      position: relative;
+      box-sizing: border-box;
+      page-break-after: always;
+    }
+
+    body.A5.landscape .sheet {
+      width: 210mm;
+      height: 147mm
+    }
+
+    .column {
+      margin-bottom: -20;
+    }
+  </style>
+</head>
+
+<body class="A5 landscape">
+  {{#each runners}}
+  <div class="sheet">
+    <img id="header_img" width="100%" src="sponsoringheader.png" />
+    <div style=" padding: 0 1rem 0 1rem;">
+      <div class="columns">
+        <div class="column is-10">
+          <div class="columns" style="padding-bottom: 0;">
+            <div class="column is-two-fifths">
+              <p style="font-size: large; font-weight: bold;">Sponsoring contract</p>
+            </div>
+            <div class="column">
+              <p style="font-size: x-small; vertical-align: revert; margin-top: auto;">Please write in BLOCK LETTERS.
+              </p>
+            </div>
+          </div>
+          <p> On the occasion of the {{eventname}} I/We want to support </p>
+          <div class="columns">
+            <div class="column is-9">
+              <span style="border-bottom: 1px solid; width: 100%; display: block;">{{this.firstname}}
+                {{this.middlename}}</span>
+              <p style="font-size: x-small; display: block;">First name</p>
+            </div>
+            <div class="column is-3">
+              <span style="border-bottom: 1px solid; width: 100%; display: block;">{{this.id}}</span>
+              <p style="font-size: x-small; display: block;">ID</p>
+            </div>
+          </div>
+        </div>
+        <div class="column">
+          <img style="vertical-align: revert; margin-top: auto; object-fit: cover; max-height: 2cm;"
+            src="{{--bc this.id ../codeformat}}" />
+        </div>
+      </div>
+      <div class="columns" style="padding-top: 1rem;">
+        <div class="column is-6">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;">{{this.lastname}}</span>
+          <p style="font-size: x-small; display: block;">Last Name</p>
+        </div>
+        <div class="column is-6">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;">{{this.group.fullName}}</span>
+          <p style="font-size: x-small; display: block;">Team/class</p>
+        </div>
+      </div>
+      <p style="margin-top: -0.5rem">with the amount of _____{{currency_symbol}} per kilometer run.</p>
+      <div class="columns" style="margin-top: -1rem;">
+        <div class="column is-6">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;"> </span>
+          <p style="font-size: x-small; display: block;">Last name</p>
+        </div>
+        <div class="column is-6">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;"> </span>
+          <p style="font-size: x-small; display: block;">First name</p>
+        </div>
+      </div>
+      <p style="font-size: medium; margin-top: -0.5rem;">Address (Sponsor)</p>
+      <p style="font-size: x-small;">(You have to provide an address if you want a donation receipt - Donation receipts can't be issued for total donation amounts under {{sponsoring_receipt_minimum_amount}}{{currency_symbol}})</p>
+      <div class="columns" style="margin-top: -1rem;">
+        <div class="column is-8">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;"> </span>
+          <p style="font-size: x-small; display: block;">Street</p>
+        </div>
+        <div class="column is-4">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;"> </span>
+          <p style="font-size: x-small; display: block;">House number</p>
+        </div>
+      </div>
+      <div class="columns" style="margin-top: -1rem;">
+        <div class="column is-4">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;"> </span>
+          <p style="font-size: x-small; display: block;">Postal code</p>
+        </div>
+        <div class="column is-8">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;"> </span>
+          <p style="font-size: x-small; display: block;">City</p>
+        </div>
+      </div>
+      <div class="columns" style="margin-top: -1rem;">
+        <div class="column is-7">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;"> </span>
+          <p style="font-size: x-small; display: block;">Location, Date</p>
+        </div>
+        <div class="column is-5">
+          <span style="border-bottom: 1px solid; width: 100%; display: block;"> </span>
+          <p style="font-size: x-small; display: block;">Signature</p>
+        </div>
+      </div>
+      <p style="font-size: xx-small; overflow: hidden; height: 4rem; text-align: center;">{{../disclaimer}}</p>
+    </div>
+  </div>
+  {{/each}}
+</body>
+
+</html>

templates/templates.go

@@ -0,0 +1,42 @@
+package templates
+
+import (
+	_ "embed"
+	"fmt"
+	"html/template"
+)
+
+//go:embed card/en.html
+var CardTemplateEn string
+
+//go:embed card/de.html
+var CardTemplateDe string
+
+//go:embed contract/en.html
+var ContractTemplateEn string
+
+//go:embed contract/de.html
+var ContractTemplateDe string
+
+//go:embed images/sponsoringheader.base64
+var ImageSponsoringHeaderBase64 string
+
+func GetTemplate(locale, templateName string) (*template.Template, error) {
+	switch templateName {
+	case "card":
+		switch locale {
+		case "en":
+			return template.New("card").Parse(CardTemplateEn)
+		case "de":
+			return template.New("card").Parse(CardTemplateDe)
+		}
+	case "contract":
+		switch locale {
+		case "en":
+			return template.New("contract").Parse(ContractTemplateEn)
+		case "de":
+			return template.New("contract").Parse(ContractTemplateDe)
+		}
+	}
+	return nil, fmt.Errorf("template not found with name %s and locale %s", templateName, locale)
+}