package controllers

// 移动端进销存库存接口：结存查询、流水追溯、预警、补货建议、批次效期。
//
// 与 /backend/erp/stock* 共用 erp_stock_core.go：结存只能由流水驱动，
// 因此这里全部是只读接口，手机端同样没有任何直接改库存的入口。

// AppErpStockController 库存查询（移动端）
type AppErpStockController struct {
	AppErpBaseController
}

// List GET /api/erp/stock/list 库存结存（group_by=product 时按商品聚合）
func (c *AppErpStockController) List() {
	cl, err := c.erpClaims()
	if c.erpDenied(err) {
		return
	}
	page, pageSize := c.erpPage()
	f := erpStockFilter{
		WarehouseID:    c.erpUint("warehouse_id"),
		ProductID:      c.erpUint("product_id"),
		BatchNo:        c.erpQuery("batch_no"),
		OnlyStock:      c.erpFlag("only_stock"),
		GroupByProduct: c.erpQuery("group_by") == "product",
		Keyword:        c.erpQuery("keyword"),
		CategoryID:     c.erpUint("category_id"),
		SafetyState:    c.erpQuery("safety_state"),
	}
	list, total, sumAmount, code, msg := erpStockListCore(c.actor(cl), f, page, pageSize)
	if msg != "" {
		c.erpFail(code, code, msg)
		return
	}
	c.erpListOK(list, total, page, pageSize, map[string]interface{}{"sum_amount": sumAmount})
}

// Ledger GET /api/erp/stock/ledger 库存流水（收发存明细追溯）
func (c *AppErpStockController) Ledger() {
	cl, err := c.erpClaims()
	if c.erpDenied(err) {
		return
	}
	page, pageSize := c.erpPage()
	f := erpLedgerFilter{
		ProductID:   c.erpUint("product_id"),
		WarehouseID: c.erpUint("warehouse_id"),
		DocType:     c.erpQuery("doc_type"),
		BatchNo:     c.erpQuery("batch_no"),
		DocNo:       c.erpQuery("doc_no"),
		DateFrom:    c.erpQuery("date_from"),
		DateTo:      c.erpQuery("date_to"),
	}
	list, total, code, msg := erpLedgerCore(c.actor(cl), f, page, pageSize)
	if msg != "" {
		c.erpFail(code, code, msg)
		return
	}
	c.erpListOK(list, total, page, pageSize, nil)
}

// Warning GET /api/erp/stock/warning 库存预警：低于安全库存 / 超储 / 缺货 / 效期临近
func (c *AppErpStockController) Warning() {
	cl, err := c.erpClaims()
	if c.erpDenied(err) {
		return
	}
	data, code, msg := erpWarningCore(c.actor(cl))
	if msg != "" {
		c.erpFail(code, code, msg)
		return
	}
	c.erpOk(data)
}

// Replenish GET /api/erp/stock/replenish 智能补货建议
func (c *AppErpStockController) Replenish() {
	cl, err := c.erpClaims()
	if c.erpDenied(err) {
		return
	}
	list, code, msg := erpReplenishCore(c.actor(cl))
	if msg != "" {
		c.erpFail(code, code, msg)
		return
	}
	c.erpOk(map[string]interface{}{"list": list, "total": len(list)})
}

// Batch GET /api/erp/stock/batch 批次与效期台账
func (c *AppErpStockController) Batch() {
	cl, err := c.erpClaims()
	if c.erpDenied(err) {
		return
	}
	page, pageSize := c.erpPage()
	f := erpBatchFilter{
		WarehouseID:  c.erpUint("warehouse_id"),
		ProductID:    c.erpUint("product_id"),
		OnlyPositive: c.erpFlag("only_positive"),
		Keyword:      c.erpQuery("keyword"),
		ExpireState:  c.erpQuery("expire_state"),
	}
	list, total, code, msg := erpBatchCore(c.actor(cl), f, page, pageSize)
	if msg != "" {
		c.erpFail(code, code, msg)
		return
	}
	c.erpListOK(list, total, page, pageSize, nil)
}