/**
 * inventoryTransfer API client
 * 2단계 재고이동 (출고측 보내기 -> 입고측 확정/거절/부분입고)
 *
 * 백엔드: backend-node/src/controllers/inventoryTransferController.ts
 * 사용처:
 *   - 출고: frontend/app/(main)/COMPANY_X/pop/outbound/inventory-move/
 *   - 입고: frontend/app/(main)/COMPANY_X/pop/inbound/inventory-move/
 */

import { apiClient } from "./client";

export type TransferStatus =
	| "PENDING"
	| "CONFIRMED"
	| "PARTIAL_CONFIRMED"
	| "REJECTED"
	| "CANCELLED";

export type LineStatus =
	| "PENDING"
	| "CONFIRMED"
	| "PARTIAL_CONFIRMED"
	| "REJECTED";

// ---- 요청 생성 (출고측 보내기) ----
export interface CreateRequestItem {
	stock_id: string;
	qty: number;
}

export interface CreateRequestBody {
	from_warehouse: string;
	to_warehouse: string;
	items: CreateRequestItem[];
	note?: string;
}

export interface CreateRequestResultLine {
	detail_id: string;
	stock_id: string;
	item_code: string;
	qty: number;
}

export interface CreateRequestData {
	request_id: string;
	request_no: string;
	status: TransferStatus;
	lines: CreateRequestResultLine[];
}

// ---- 목록 row (pending / sent 공용) ----
export interface TransferListRow {
	request_id: string;
	request_no: string;
	from_warehouse: string;
	to_warehouse: string;
	from_warehouse_name: string;
	to_warehouse_name: string;
	status: TransferStatus;
	note: string | null;
	requested_by: string;
	requested_at: string;
	line_count: number | string;
	pending_count: number | string;
}

// ---- 상세 ----
export interface TransferMaster {
	request_id: string;
	request_no: string;
	from_warehouse: string;
	to_warehouse: string;
	from_warehouse_name: string;
	to_warehouse_name: string;
	status: TransferStatus;
	note: string | null;
	requested_by: string;
	requested_at: string;
	confirmed_by: string | null;
	confirmed_at: string | null;
}

export interface TransferDetail {
	detail_id: string;
	item_code: string;
	item_name: string;
	unit: string;
	lot_no: string | null;
	from_location: string | null;
	to_location: string | null;
	requested_qty: string;
	confirmed_qty: string;
	rejected_qty: string;
	line_status: LineStatus;
	reject_reason: string | null;
}

export interface TransferDetailData {
	master: TransferMaster;
	details: TransferDetail[];
}

// ---- 입고측 처리 ----
export interface ProcessItem {
	detail_id: string;
	confirmed_qty: number; // 0 = 전체 거절
	reject_reason?: string;
}

export interface ProcessBody {
	items: ProcessItem[];
}

export interface ProcessData {
	request_id: string;
	status: TransferStatus;
}

// ============================================================
// API
// ============================================================
export async function createTransferRequest(body: CreateRequestBody) {
	const res = await apiClient.post("/inventory-transfer/request", body);
	return res.data as {
		success: boolean;
		message?: string;
		data?: CreateRequestData;
	};
}

export async function getPendingTransfers(warehouseCode?: string) {
	const params = warehouseCode ? { warehouse_code: warehouseCode } : {};
	const res = await apiClient.get("/inventory-transfer/pending", { params });
	return res.data as { success: boolean; data: TransferListRow[] };
}

export async function getReceivedHistory(warehouseCode?: string) {
	const params = warehouseCode ? { warehouse_code: warehouseCode } : {};
	const res = await apiClient.get("/inventory-transfer/received-history", { params });
	return res.data as { success: boolean; data: TransferListRow[] };
}

export async function getSentTransfers(warehouseCode?: string) {
	const params = warehouseCode ? { warehouse_code: warehouseCode } : {};
	const res = await apiClient.get("/inventory-transfer/sent", { params });
	return res.data as { success: boolean; data: TransferListRow[] };
}

export async function getTransferDetail(requestId: string) {
	const res = await apiClient.get(`/inventory-transfer/${requestId}`);
	return res.data as { success: boolean; data: TransferDetailData };
}

export async function processTransfer(requestId: string, body: ProcessBody) {
	const res = await apiClient.post(
		`/inventory-transfer/${requestId}/process`,
		body,
	);
	return res.data as { success: boolean; message?: string; data?: ProcessData };
}

export async function cancelTransfer(requestId: string) {
	const res = await apiClient.post(`/inventory-transfer/${requestId}/cancel`);
	return res.data as { success: boolean; message?: string; data?: ProcessData };
}