package handlers

import (
	"net/http"
	"strconv"

	"goblog/database"
	"goblog/models"

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

// 站点基础设置键名
const (
	OptionSiteName        = "site_name"
	OptionSiteDesc        = "site_desc"
	OptionShowComments    = "show_comments"     // "1" 显示评论 / "0" 隐藏评论
	OptionCommentPageSize = "comments_per_page" // 前台评论每页条数
)

// GetSettings 获取站点基础设置（管理员）
func GetSettings(c *gin.Context) {
	cfg := getConfig()

	opts, err := models.GetOptionsByUser(database.DB, 0)
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": "读取设置失败"})
		return
	}

	// 默认值：站点信息取配置文件，评论默认显示、每页 10 条
	settings := map[string]string{
		OptionSiteName:        cfg.App.Name,
		OptionSiteDesc:        cfg.App.Description,
		OptionShowComments:    "1",
		OptionCommentPageSize: "10",
	}
	for name := range settings {
		if v, ok := opts[name]; ok && v != "" {
			settings[name] = v
		}
	}

	c.JSON(http.StatusOK, gin.H{"data": settings})
}

// UpdateSettingsRequest 更新站点基础设置请求
type UpdateSettingsRequest struct {
	SiteName        string `json:"site_name" binding:"required"`
	SiteDesc        string `json:"site_desc"`
	ShowComments    bool   `json:"show_comments"`
	CommentsPerPage int    `json:"comments_per_page" binding:"required,min=1,max=100"`
}

// UpdateSettings 保存站点基础设置（管理员）
func UpdateSettings(c *gin.Context) {
	var req UpdateSettingsRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "参数错误: " + err.Error()})
		return
	}

	showComments := "0"
	if req.ShowComments {
		showComments = "1"
	}
	options := map[string]string{
		OptionSiteName:        req.SiteName,
		OptionSiteDesc:        req.SiteDesc,
		OptionShowComments:    showComments,
		OptionCommentPageSize: strconv.Itoa(req.CommentsPerPage),
	}

	if err := models.BatchSetOptions(database.DB, 0, options); err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": "保存设置失败"})
		return
	}

	c.JSON(http.StatusOK, gin.H{"message": "设置已保存"})
}