package handler

import (
	"net/http"
	"strings"
	"time"

	"bj_power_workstation/internal/auth"
	"bj_power_workstation/internal/svc"

	"golang.org/x/crypto/bcrypt"
)

func healthHandler(ctx *svc.ServiceContext) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		if err := ctx.Store.Ping(); err == nil {
			ok(w, map[string]any{
				"status":  "UP",
				"time":    time.Now().Format("2006-01-02 15:04:05"),
				"service": "bj_power_workstation",
			})
			return
		}
		fail(w, http.StatusServiceUnavailable, "本地数据库不可用")
	}
}

// loginHandler 登录代理 MES /api/internal/station/login（块1：用户体系来源于 MES）。
// 前端提交 {username, password, stationNo}，MES 校验工位终端密码 + 工位权限并签发同密钥 JWT。
// 响应体原样透传（{code,message,data:{accessToken,expireAt,user,stations,stationNo}}）。
func loginHandler(ctx *svc.ServiceContext) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		var req struct {
			Username  string `json:"username"`
			Password  string `json:"password"`
			StationNo int    `json:"stationNo"`
		}
		if err := parseJSON(r, &req); err != nil {
			fail(w, http.StatusBadRequest, "参数错误")
			return
		}
		if strings.TrimSpace(req.Username) == "" || req.Password == "" {
			fail(w, http.StatusBadRequest, "用户名和密码必填")
			return
		}

		body, _, err := ctx.Mes.Post("/api/internal/station/login", map[string]any{
			"username":  strings.TrimSpace(req.Username),
			"password":  req.Password,
			"stationNo": req.StationNo,
		})
		if err != nil {
			fail(w, http.StatusBadGateway, "MES 服务不可达："+errString(err))
			return
		}
		w.Header().Set("Content-Type", "application/json; charset=utf-8")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write(body)
	}
}

// configHandler GET /api/config 返回工位配置：
// 固定工位号 stationNo（Station.Code 为空则前端可自选 1~12）、本工位需拧紧的螺丝颗数。
func configHandler(ctx *svc.ServiceContext) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		ok(w, map[string]any{
			"stationNo":  atoi(ctx.Config.Station.Code, 0),
			"screwCount": ctx.Config.Station.ScrewCount,
		})
	}
}