package themes_handler

import (
	"log"
	"net/http"
	"strconv"

	"autolibrary.top/webserver/backend/models/themes_model"
	"autolibrary.top/webserver/utils"

	"github.com/gin-gonic/gin"
)

func (h *Handler) GetPendingThemes(c *gin.Context) {
	var themes []themes_model.Theme
	result := h.DB.
		Where("status = ?", themes_model.ThemePending).
		Order("created_at ASC").
		Find(&themes)
	if result.Error != nil {
		log.Printf("[E] GET > occur an error when get pending themes: %v", result.Error)
		c.JSON(http.StatusInternalServerError, gin.H{
			"code": http.StatusInternalServerError,
			"msg":  "GET > occur an error when get pending themes",
			"data": nil,
		})
		return
	}

	for i := range themes {
		themes[i].Author = h.Users.ResolveAuthor(themes[i].UserID, themes[i].Author)
		themes[i].Verified = h.Users.IsVerified(themes[i].UserID)
	}

	log.Printf("[I] GET > get pending themes (count=%d) successful", len(themes))
	c.JSON(http.StatusOK, gin.H{
		"code": http.StatusOK,
		"msg":  "GET > get pending themes successful",
		"data": themes,
	})
}

// PUT /api/admin/themes/:id/review

func (h *Handler) ReviewTheme(c *gin.Context) {
	id, err := strconv.Atoi(c.Param("id"))
	if err != nil {
		log.Printf("[E] PUT > try to review theme, but got invalid id: '%s'", c.Param("id"))
		c.JSON(http.StatusBadRequest, gin.H{
			"code": http.StatusBadRequest,
			"msg":  "GET > invalid id",
			"data": nil,
		})
		return
	}

	var body struct {
		Action  string `json:"action"`
		Comment string `json:"comment"`
	}
	if err := c.ShouldBindJSON(&body); err != nil {
		log.Printf("[E] PUT > try to review theme (id=%d), but got invalid request data: %v", id, err)
		c.JSON(http.StatusBadRequest, gin.H{
			"code": http.StatusBadRequest,
			"msg":  "PUT > invalid request body",
			"data": nil,
		})
		return
	}

	if body.Action != "approved" && body.Action != "rejected" {
		log.Printf("[E] PUT > try to review theme (id=%d), but got invalid action: '%s'", id, body.Action)
		c.JSON(http.StatusBadRequest, gin.H{
			"code": http.StatusBadRequest,
			"msg":  "操作必须为通过或退回",
			"data": nil,
		})
		return
	}

	var theme themes_model.Theme
	result := h.DB.First(&theme, id)
	if result.Error != nil {
		log.Printf("[E] PUT > theme (id=%d) can not found for review: %v", id, result.Error)
		c.JSON(http.StatusNotFound, gin.H{
			"code": http.StatusNotFound,
			"msg":  "GET > theme not found",
			"data": nil,
		})
		return
	}

	theme.Status = themes_model.ThemeStatus(body.Action)
	theme.ReviewComment = body.Comment
	theme.ReviewedBy = c.GetString("user_name")
	if theme.ReviewedBy == "" {
		theme.ReviewedBy = "api-key"
	}
	theme.UpdatedAt = utils.NowInShanghai()

	result = h.DB.Save(&theme)
	if result.Error != nil {
		log.Printf("[E] PUT > occur an error when review theme (id=%d): %v", id, result.Error)
		c.JSON(http.StatusInternalServerError, gin.H{
			"code": http.StatusInternalServerError,
			"msg":  "审核操作失败",
			"data": nil,
		})
		return
	}

	theme.Author = h.Users.ResolveAuthor(theme.UserID, theme.Author)
	theme.Verified = h.Users.IsVerified(theme.UserID)

	log.Printf("[I] PUT > review theme (id=%d, action=%s) successful", id, body.Action)
	c.JSON(http.StatusOK, gin.H{
		"code": http.StatusOK,
		"msg":  "PUT > review theme successful",
		"data": theme,
	})
}