package handler

import (
	"git.sundynix.cn/Blizzard/Veyra/internal/apperror"
	"git.sundynix.cn/Blizzard/Veyra/internal/model"
	"github.com/gin-gonic/gin"
	"net/http"
	"strconv"
)

func bindCandidates(r *gin.Engine, options IdentityOptions) {
	for _, admin := range []bool{true, false} {
		path, audience := "/api/v1", "app"
		if admin {
			path, audience = "/api/admin/v1", "admin"
		}
		group := r.Group(path, func(c *gin.Context) { authenticate(c, options, audience) })
		group.Use(func(c *gin.Context) {
			if options.Candidates == nil {
				fail(c, apperror.ErrUnavailable)
				return
			}
			c.Next()
		})
		group.GET("/candidates", func(c *gin.Context) {
			limit := 100
			if raw := c.Query("limit"); raw != "" {
				value, err := strconv.Atoi(raw)
				if err != nil {
					fail(c, apperror.ErrInvalidInput)
					return
				}
				limit = value
			}
			result, err := options.Candidates.List(c.Request.Context(), currentUser(c), admin, c.Query("status"), limit)
			if err != nil {
				fail(c, err)
				return
			}
			success(c, http.StatusOK, result)
		})
		group.GET("/candidates/:id", func(c *gin.Context) {
			result, err := options.Candidates.Detail(c.Request.Context(), currentUser(c), c.Param("id"), admin)
			if err != nil {
				fail(c, err)
				return
			}
			success(c, http.StatusOK, result)
		})
		if !admin {
			continue
		}
		group.Use(func(c *gin.Context) {
			if !sameOrigin(c.Request) {
				fail(c, apperror.ErrForbidden)
				return
			}
			c.Next()
		})
		group.POST("/candidates", func(c *gin.Context) {
			var input model.CandidateDraftInput
			if !decode(c, &input) {
				return
			}
			result, err := options.Candidates.Create(c.Request.Context(), currentUser(c), "", c.Writer.Header().Get("X-Request-ID"), input, 0)
			if err != nil {
				fail(c, err)
				return
			}
			success(c, http.StatusCreated, result)
		})
		group.POST("/candidates/:id/revisions", func(c *gin.Context) {
			var input model.CandidateRevisionInput
			if !decode(c, &input) {
				return
			}
			result, err := options.Candidates.Create(c.Request.Context(), currentUser(c), c.Param("id"), c.Writer.Header().Get("X-Request-ID"), input.CandidateDraftInput, input.ExpectedVersion)
			if err != nil {
				fail(c, err)
				return
			}
			success(c, http.StatusCreated, result)
		})
		for endpoint, action := range map[string]string{"submit": "SUBMIT", "publish": "PUBLISH", "return": "RETURN", "withdraw": "WITHDRAW"} {
			group.POST("/candidates/:id/"+endpoint, func(c *gin.Context) {
				var input model.CandidateActionInput
				if !decode(c, &input) {
					return
				}
				result, err := options.Candidates.Transition(c.Request.Context(), currentUser(c), c.Param("id"), action, c.Writer.Header().Get("X-Request-ID"), input)
				if err != nil {
					fail(c, err)
					return
				}
				success(c, http.StatusOK, result)
			})
		}
	}
}