package web

import (
	"log"
	"net/http"
	"net/url"
	"strings"

	"github.com/gin-contrib/sessions"
	"github.com/gin-gonic/gin"
	csrf "github.com/utrack/gin-csrf"

	"code.osinet.fr/fgm/sqs_demo/back/services/redriver"
)

func makeDeleteHandler(rd redriver.Redriver) gin.HandlerFunc {
	type IDList struct {
		ID string `form:"id"`
	}

	const prefix = "id-"
	parseIDs := func(q url.Values) []string {
		var ids []string
		for k, vs := range q {
			// Weed out bad keys, bad value lengths, and non-matching checkbox statuses.
			if pos := strings.Index(k, prefix); pos == -1 || len(vs) != 1 || vs[0] != "on" {
				continue
			}
			b, a, found := strings.Cut(k, prefix)
			if b == "" && found {
				ids = append(ids, a)
			}
		}
		return ids
	}
	return func(c *gin.Context) {
		qName := c.Param("name")
		ids := parseIDs(c.Request.URL.Query())
		sess := sessions.Default(c)
		flashes := sess.Flashes()
		token := csrf.GetToken(c)
		sess.Save()

		log.Println(ids)
		c.HTML(http.StatusOK, "confirm", gin.H{
			"flashes":     flashes,
			"question":    "Do you confirm this deletion request ?",
			"description": "These messages cannot be recovered after that step",
			"list":        ids,
			"cancel":      "Cancel",
			"confirm":     "Delete",
			"csrf":        token,
			"redirect":    "/queue/" + qName,
		})
	}
	return nil
}

func makeDeleteConfirmHandler(rd redriver.Redriver) gin.HandlerFunc {
	return func(c *gin.Context) {
		c.JSON(http.StatusServiceUnavailable, gin.H{
			"message": "deletion confirmation",
			"error":   "not implemented",
		})
	}
}