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"
)

// GenerateContract godoc
// @Summary Generate a contract
// @Description Generate a contract based on the provided data
// @Tags contracts
// @Accept json
// @Param data body models.Contract true "Contract data"
// @Produce application/pdf
// @Router /contracts [post]
func GenerateContract(c *fiber.Ctx) error {
	contract := new(models.Contract)
	if err := c.BodyParser(contract); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
			"error": err.Error(),
		})
	}
	if !slices.Contains([]string{"en", "de"}, contract.Locale) {
		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)
}