package handlers

import (
	"encoding/csv"
	"io"
	"net/http"

	"git.agecem.com/agecem/bottin/v5/data"
	"git.agecem.com/agecem/bottin/v5/models"
	"git.agecem.com/agecem/bottin/v5/responses"
	"github.com/labstack/echo/v4"

	"github.com/gocarina/gocsv"
)

func PostMembres(c echo.Context) error {
	var response responses.PostMembresResponse
	client, err := data.NewDataClientFromViper()
	if err != nil {
		response.StatusCode = http.StatusInternalServerError
		response.Message = "Could not establish database connection"
		response.Error = err.Error()

		return c.JSON(response.StatusCode, response)
	}
	defer client.DB.Close()

	var membres []models.Membre

	switch c.Request().Header.Get("Content-Type") {
	case "application/json":
		if err := c.Bind(&membres); err != nil {
			response.StatusCode = http.StatusBadRequest
			response.Message = "Could not bind membres"
			response.Error = err.Error()
			return c.JSON(response.StatusCode, response)
		}
	case "text/csv":
		body := c.Request().Body
		if body == nil {
			response.StatusCode = http.StatusBadRequest
			response.Message = "Request body is empty"
			return c.JSON(response.StatusCode, response)
		}
		defer body.Close()

		// Parse the CSV data from the request body using gocsv.
		if err := gocsv.Unmarshal(body, &membres); err != nil {
			response.StatusCode = http.StatusBadRequest
			response.Message = "Could not unmarshal into membres"
			response.Error = err.Error()
			return c.JSON(response.StatusCode, response)
		}
	default:
		response.StatusCode = http.StatusBadRequest
		response.Message = "Invalid Content-Type"
		return c.JSON(response.StatusCode, response)
	}

	if len(membres) == 0 {
		response.StatusCode = http.StatusOK
		response.Message = "Nothing to do"
		return c.JSON(response.StatusCode, response)
	}

	newMembres, err := client.InsertMembres(membres)
	if err != nil {
		response.StatusCode = http.StatusInternalServerError
		response.Message = "Could not insert membres"
		response.Error = err.Error()
		return c.JSON(response.StatusCode, response)
	}

	response.StatusCode = http.StatusCreated
	response.Message = "Insert successful"
	response.Data.MembresInserted = newMembres
	return c.JSON(response.StatusCode, response)
}

func PostProgrammes(c echo.Context) error {
	var response responses.PostProgrammesResponse

	client, err := data.NewDataClientFromViper()
	if err != nil {
		response.StatusCode = http.StatusInternalServerError
		response.Message = "Could not establish database connection"
		response.Error = err.Error()

		return c.JSON(response.StatusCode, response)
	}
	defer client.DB.Close()

	var programmes []models.Programme

	switch c.Request().Header.Get("Content-Type") {
	case "application/json":
		if err := c.Bind(&programmes); err != nil {
			response.StatusCode = http.StatusBadRequest
			response.Message = "Could not bind programmes"
			response.Error = err.Error()
			return c.JSON(response.StatusCode, response)
		}
	case "text/csv":
		body := c.Request().Body
		if body == nil {
			response.StatusCode = http.StatusBadRequest
			response.Message = "Request body is empty"
			return c.JSON(response.StatusCode, response)
		}
		defer body.Close()

		gocsv.SetCSVReader(func(in io.Reader) gocsv.CSVReader {
			r := csv.NewReader(in)
			r.Comma = ';'
			return r // Allows use ; as delimiter
		})

		// Parse the CSV data from the request body using gocsv.
		if err := gocsv.Unmarshal(body, &programmes); err != nil {
			response.StatusCode = http.StatusBadRequest
			response.Message = "Could not unmarshal into programmes"
			response.Error = err.Error()
			return c.JSON(response.StatusCode, response)
		}
	default:
		response.StatusCode = http.StatusBadRequest
		response.Message = "Invalid Content-Type"
		return c.JSON(response.StatusCode, response)
	}

	if len(programmes) == 0 {
		response.StatusCode = http.StatusOK
		response.Message = "Nothing to do"
		return c.JSON(response.StatusCode, response)
	}

	newProgrammes, err := client.InsertProgrammes(programmes)
	if err != nil {
		response.StatusCode = http.StatusInternalServerError
		response.Message = "Could not insert programmes"
		response.Error = err.Error()
		return c.JSON(response.StatusCode, response)
	}

	response.StatusCode = http.StatusCreated
	response.Message = "Insert successful"
	response.Data.ProgrammesInserted = newProgrammes
	return c.JSON(response.StatusCode, response)
}