package handler

import (
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"strconv"
	"strings"

	"bj_power_workstation/internal/store"
	"bj_power_workstation/internal/svc"
)

// tighteningListHandler GET /api/tightening/list?sn=&only_pending=true&limit=100
// 查询本地 torque_results（最新优先）。
func tighteningListHandler(ctx *svc.ServiceContext) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		q := r.URL.Query()
		sn := q.Get("sn")

		onlyPending := false
		if v, err := strconv.ParseBool(q.Get("only_pending")); err == nil {
			onlyPending = v
		}

		limit := atoi(q.Get("limit"), 100)
		if limit <= 0 || limit > 500 {
			limit = 500
		}

		list, err := ctx.Store.ListTorqueResults(sn, onlyPending, limit)
		if err != nil {
			fail(w, http.StatusInternalServerError, "查询拧紧结果失败："+err.Error())
			return
		}
		ok(w, map[string]any{
			"total": len(list),
			"list":  list,
		})
	}
}

// tighteningRecordHandler POST /api/tightening/record —— 录入一条拧紧数据。
// 真实场景：工件走到「需要拧紧枪」的工艺步骤时界面聚焦拧紧输入框，人工操作拧紧枪把采集到的
// 扭矩值打入输入框回车 → 本接口按当前工件 SN + 工艺步骤落本地库，再由后台同步器上报 MES。
// 入参 {sn, workOrderNo, stepId, stepName, screwNo, torque, angle, result, operator}；
// result 由前端按该步骤考核标准(扭矩 RANGE)判定后传入，非 NG 一律记 OK。
func tighteningRecordHandler(ctx *svc.ServiceContext) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		payload, err := io.ReadAll(r.Body)
		if err != nil {
			fail(w, http.StatusBadRequest, "请求体读取失败")
			return
		}
		var req struct {
			Sn          string  `json:"sn"`
			WorkOrderNo string  `json:"workOrderNo"`
			StepId      string  `json:"stepId"`
			StepName    string  `json:"stepName"`
			ScrewNo     string  `json:"screwNo"`
			Torque      float64 `json:"torque"`
			Angle       float64 `json:"angle"`
			Result      string  `json:"result"`
			Operator    string  `json:"operator"`
		}
		if err := json.Unmarshal(payload, &req); err != nil {
			fail(w, http.StatusBadRequest, "请求体解析失败")
			return
		}
		if strings.TrimSpace(req.Sn) == "" {
			fail(w, http.StatusBadRequest, "缺少工件 SN，请先上料")
			return
		}
		if strings.TrimSpace(req.StepId) == "" {
			fail(w, http.StatusBadRequest, "缺少拧紧工艺步骤")
			return
		}
		if req.Result != "NG" {
			req.Result = "OK"
		}
		dockCode := fmt.Sprintf("DOCK%02d", ctx.Config.Station.StationNo)
		id, err := ctx.Store.InsertTorqueResult(store.TorqueResult{
			WorkOrderNo: req.WorkOrderNo,
			Sn:          req.Sn,
			DockCode:    dockCode,
			ScrewNo:     req.ScrewNo,
			StepId:      req.StepId,
			StepName:    req.StepName,
			Torque:      req.Torque,
			Angle:       req.Angle,
			Result:      req.Result,
			Operator:    req.Operator,
		})
		if err != nil {
			fail(w, http.StatusInternalServerError, "拧紧数据入库失败："+err.Error())
			return
		}
		ctx.Store.AddEventLog(req.WorkOrderNo, req.Operator, "torque_record",
			fmt.Sprintf("拧紧录入 sn=%s 步骤=%s 扭矩=%.1f 结果=%s", req.Sn, req.StepName, req.Torque, req.Result))
		ok(w, map[string]any{"id": id, "result": req.Result})
	}
}