package handler

import (
	"context"
	"net/http"
	"time"

	"bj_power_mes/common/httpx"
	"bj_power_mes/internal/logic"
	"bj_power_mes/internal/svc"

	"github.com/zeromicro/go-zero/core/logx"
)

// SettingsHandler GET /api/v1/settings 基础设置 + 本机基础信息（只读）
func SettingsHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		data, err := logic.New(svcCtx).GetSettings(r.Context())
		if err != nil {
			httpx.Fail(w, 2501, err.Error())
			return
		}
		httpx.Ok(w, data)
	}
}

// SaveSettingsHandler PUT /api/v1/settings 保存基础设置（WMS 地址热切换；sys.settings:edit 权限）
func SaveSettingsHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		var req logic.SettingsReq
		if err := httpx.ParseJSON(r, &req); err != nil {
			httpx.BadRequest(w, "请求体解析失败")
			return
		}
		if err := logic.New(svcCtx).SaveSettings(r.Context(), req, operator(r, "")); err != nil {
			httpx.Fail(w, 2502, err.Error())
			return
		}
		httpx.OkMessage(w, "已保存并生效", nil)
	}
}

// WmsTestHandler GET /api/v1/settings/wms-test?url= 测试 WMS 连通性（url 为空测当前生效地址）
func WmsTestHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		msg, err := logic.New(svcCtx).TestWms(r.Context(), r.URL.Query().Get("url"))
		if err != nil {
			httpx.Fail(w, 2503, err.Error())
			return
		}
		httpx.OkMessage(w, msg, nil)
	}
}

// StartEventLogRetention 事件日志保留期清理：每小时检查一次（保留天数在「基础设置」页
// 配置 eventlog.retention.days，0=不清理），删除超过保留期的操作日志。
func StartEventLogRetention(ctx *svc.ServiceContext) {
	go func() {
		ticker := time.NewTicker(time.Hour)
		defer ticker.Stop()
		for range ticker.C {
			days := logic.New(ctx).CfgInt(context.Background(), logic.CfgLogRetention, 0)
			if days <= 0 {
				continue
			}
			n, err := ctx.EventLog.CleanupBefore(context.Background(), time.Now().AddDate(0, 0, -days))
			if err != nil {
				logx.Errorf("事件日志清理失败: %v", err)
				continue
			}
			if n > 0 {
				logx.Infof("事件日志保留 %d 天：已清理 %d 条过期记录", days, n)
			}
		}
	}()
}