package handler

import (
	"net/http"
	"strconv"
	"strings"

	"bj_power_wms/ent"
	"bj_power_wms/ent/ordermaterialledger"
	"bj_power_wms/ent/semifinished"
	"bj_power_wms/internal/svc"
)

// 半成品 / 台账 相关（盘点见 stocktake.go）

// semiInboundHandler 半成品入库（携带已完成工序）
// 与 MES 闭环：MES 工位报工暂存退库时调用本接口，把半成品 SN 入 WMS 库。
// 为保持两系统解耦，materialCode 不强制要求——优先用请求传入，
// 其次按 SN 反查 WMS 序列号台账，都没有则留空（SN 本身即追溯锚点）。
func semiInboundHandler(ctx *svc.ServiceContext) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		var req struct {
			Sn               string `json:"sn"`
			MaterialCode     string `json:"materialCode"`
			DoneProcessCodes []int  `json:"doneProcessCodes"`
			CompletedProcess string `json:"completedProcess"`
			ZoneCode         string `json:"zoneCode"`
			OrderNo          string `json:"orderNo"`
			Operator         string `json:"operator"`
		}
		if err := parseJSON(r, &req); err != nil {
			fail(w, http.StatusBadRequest, "参数错误")
			return
		}
		if req.Sn == "" {
			fail(w, http.StatusBadRequest, "sn 必填")
			return
		}

		exists, err := ctx.EntClient.SemiFinished.Query().
			Where(semifinished.SnEQ(req.Sn)).
			Exist(ctx0())
		if err != nil {
			fail(w, http.StatusInternalServerError, err.Error())
			return
		}
		if exists {
			fail(w, http.StatusConflict, "半成品已存在: "+req.Sn)
			return
		}

		// 已完成工序：MES 传 doneProcessCodes([]int) 优先，否则用 completedProcess 字符串
		completed := req.CompletedProcess
		if len(req.DoneProcessCodes) > 0 {
			parts := make([]string, 0, len(req.DoneProcessCodes))
			for _, c := range req.DoneProcessCodes {
				parts = append(parts, strconv.Itoa(c))
			}
			completed = strings.Join(parts, ",")
		}

		// 物料编码：以请求传入为准（半成品是独立固定业务类型，不依赖统一库存表）
		materialCode := req.MaterialCode

		rec, err := ctx.EntClient.SemiFinished.Create().
			SetSn(req.Sn).
			SetNillableMaterialCode(strPtr(materialCode)).
			SetNillableCompletedProcess(strPtr(completed)).
			SetNillableZoneCode(strPtr(req.ZoneCode)).
			SetStatus("在库").
			SetNillableOrderNo(strPtr(req.OrderNo)).
			Save(ctx0())
		if err != nil {
			fail(w, http.StatusInternalServerError, err.Error())
			return
		}

		ok(w, rec)
	}
}

// semiOutboundHandler 半成品出库（重上线）
func semiOutboundHandler(ctx *svc.ServiceContext) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		var req struct {
			Sn       string `json:"sn"`
			ZoneCode string `json:"zoneCode"`
			Operator string `json:"operator"`
		}
		if err := parseJSON(r, &req); err != nil {
			fail(w, http.StatusBadRequest, "参数错误")
			return
		}
		if req.Sn == "" {
			fail(w, http.StatusBadRequest, "sn 必填")
			return
		}

		rec, err := ctx.EntClient.SemiFinished.Query().
			Where(semifinished.SnEQ(req.Sn)).
			Only(ctx0())
		if err != nil {
			fail(w, http.StatusNotFound, "半成品不存在: "+req.Sn)
			return
		}
		if rec.Status != "在库" {
			fail(w, http.StatusConflict, "半成品不在库: "+rec.Status)
			return
		}

		ctx.EntClient.SemiFinished.UpdateOneID(rec.ID).
			SetStatus("出库").
			ExecX(ctx0())

		ok(w, map[string]any{"sn": req.Sn, "status": "出库"})
	}
}

// querySemiHandler 半成品查询
func querySemiHandler(ctx *svc.ServiceContext) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		page := atoi(r.URL.Query().Get("page"), 1)
		pageSize := atoi(r.URL.Query().Get("pageSize"), 20)
		materialCode := r.URL.Query().Get("materialCode")
		status := r.URL.Query().Get("status")

		q := ctx.EntClient.SemiFinished.Query()
		if materialCode != "" {
			q = q.Where(semifinished.MaterialCodeEQ(materialCode))
		}
		if status != "" {
			q = q.Where(semifinished.StatusEQ(status))
		}

		total, err := q.Count(ctx0())
		if err != nil {
			fail(w, http.StatusInternalServerError, err.Error())
			return
		}
		list, err := q.Order(ent.Desc("created_at")).
			Offset((page - 1) * pageSize).Limit(pageSize).All(ctx0())
		if err != nil {
			fail(w, http.StatusInternalServerError, err.Error())
			return
		}

		ok(w, map[string]any{
			"total":    total,
			"list":     list,
			"page":     page,
			"pageSize": pageSize,
		})
	}
}

// ledger 相关：queryLedgerHandler 工单物料台账查询
func queryLedgerHandler(ctx *svc.ServiceContext) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		orderNo := r.URL.Query().Get("orderNo")
		materialCode := r.URL.Query().Get("materialCode")
		page := atoi(r.URL.Query().Get("page"), 1)
		pageSize := atoi(r.URL.Query().Get("pageSize"), 20)

		q := ctx.EntClient.OrderMaterialLedger.Query()
		if orderNo != "" {
			q = q.Where(ordermaterialledger.OrderNoEQ(orderNo))
		}
		if materialCode != "" {
			q = q.Where(ordermaterialledger.MaterialCodeEQ(materialCode))
		}
		total, err := q.Count(ctx0())
		if err != nil {
			fail(w, http.StatusInternalServerError, err.Error())
			return
		}
		list, err := q.Order(ent.Desc("created_at")).
			Offset((page - 1) * pageSize).Limit(pageSize).All(ctx0())
		if err != nil {
			fail(w, http.StatusInternalServerError, err.Error())
			return
		}
		ok(w, map[string]any{
			"total":    total,
			"list":     list,
			"page":     page,
			"pageSize": pageSize,
		})
	}
}