package handler

import (
	"gotest/internal/model"

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

// ConfigHandler 系统配置处理器
type ConfigHandler struct {
	db *gorm.DB
}

// NewConfigHandler 创建系统配置处理器
func NewConfigHandler(db *gorm.DB) *ConfigHandler {
	return &ConfigHandler{db: db}
}

// GetConfig 获取配置 GET /api/v1/admin/config/:key
func (h *ConfigHandler) GetConfig(c *gin.Context) {
	key := c.Param("key")
	var config model.Config
	if err := h.db.Where("`key` = ?", key).First(&config).Error; err != nil {
		Success(c, gin.H{"key": key, "value": "", "remark": ""})
		return
	}
	Success(c, config)
}

// SetConfig 设置配置 PUT /api/v1/admin/config/:key
func (h *ConfigHandler) SetConfig(c *gin.Context) {
	key := c.Param("key")
	var req struct {
		Value  string `json:"value"`
		Remark string `json:"remark"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		FailBadRequest(c, "参数错误")
		return
	}

	var config model.Config
	result := h.db.Where("`key` = ?", key).First(&config)
	if result.Error == gorm.ErrRecordNotFound {
		config = model.Config{
			Key:    key,
			Value:  req.Value,
			Remark: req.Remark,
		}
		if err := h.db.Create(&config).Error; err != nil {
			FailInternal(c, "创建失败: "+err.Error())
			return
		}
	} else if result.Error == nil {
		config.Value = req.Value
		if req.Remark != "" {
			config.Remark = req.Remark
		}
		if err := h.db.Save(&config).Error; err != nil {
			FailInternal(c, "更新失败: "+err.Error())
			return
		}
	} else {
		FailInternal(c, "数据库错误: "+result.Error.Error())
		return
	}

	Success(c, config)
}

// ListConfigs 获取所有配置 GET /api/v1/admin/config
func (h *ConfigHandler) ListConfigs(c *gin.Context) {
	var configs []model.Config
	if err := h.db.Order("id ASC").Find(&configs).Error; err != nil {
		FailInternal(c, "查询失败: "+err.Error())
		return
	}
	Success(c, configs)
}

// BatchSetConfigs 批量设置配置 PUT /api/v1/admin/config
func (h *ConfigHandler) BatchSetConfigs(c *gin.Context) {
	var req struct {
		Items []ConfigItem `json:"items"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		FailBadRequest(c, "参数错误")
		return
	}

	for _, item := range req.Items {
		var config model.Config
		result := h.db.Where("`key` = ?", item.Key).First(&config)
		if result.Error == gorm.ErrRecordNotFound {
			config = model.Config{
				Key:    item.Key,
				Value:  item.Value,
				Remark: item.Remark,
			}
			h.db.Create(&config)
		} else if result.Error == nil {
			config.Value = item.Value
			if item.Remark != "" {
				config.Remark = item.Remark
			}
			h.db.Save(&config)
		}
	}

	SuccessMsg(c, "保存成功")
}

// GetNavSettings 公开接口：获取导航页所有配置 GET /api/v1/nav-settings
func (h *ConfigHandler) GetNavSettings(c *gin.Context) {
	// 导航页所有可配置项的 key 列表
	keys := []string{
		"nav_site_title",
		"nav_hero_title",
		"nav_hero_highlight",
		"nav_hero_desc",
		"nav_pill_templates",
		"nav_pill_lines",
		"nav_pill_industries",
		"nav_pill_per_industry",
		"nav_pill_responsive",
		"nav_consult_title",
		"nav_consult_desc",
		"nav_consult_success",
		"nav_footer_text",
		"nav_company_name",
		// 6 大行业标题
		"nav_sec_enterprise_title",
		"nav_sec_enterprise_sub",
		"nav_sec_shop_title",
		"nav_sec_shop_sub",
		"nav_sec_food_title",
		"nav_sec_food_sub",
		"nav_sec_game_title",
		"nav_sec_game_sub",
		"nav_sec_app_title",
		"nav_sec_app_sub",
		"nav_sec_music_title",
		"nav_sec_music_sub",
	}

	settings := map[string]string{}
	for _, key := range keys {
		var config model.Config
		if err := h.db.Where("`key` = ?", key).First(&config).Error; err == nil {
			settings[key] = config.Value
		}
	}

	Success(c, settings)
}

// ConfigItem 配置项
type ConfigItem struct {
	Key    string `json:"key"`
	Value  string `json:"value"`
	Remark string `json:"remark"`
}