import axios from 'axios';

const getAuthHeader = () => {
    const bmToken =
        (typeof document !== 'undefined'
            ? document.cookie
                  .split('; ')
                  .find((row) => row.startsWith('bm-token='))
                  ?.split('=')[1]
            : null) || (typeof localStorage !== 'undefined' ? localStorage.getItem('bm-token') : null);
    return bmToken && bmToken !== 'undefined' && bmToken !== 'null' ? { Authorization: `Bearer ${bmToken}` } : {};
};

export const WarehouseItemService = {
    // ─── Items ────────────────────────────────────────────────────────────────
    listItems: async (params = {}) => {
        const response = await axios.get('/api/warehouse-items/admin/items', {
            params,
            withCredentials: true,
            headers: getAuthHeader()
        });
        return response.data;
    },

    createItem: async (data) => {
        const response = await axios.post('/api/warehouse-items/admin/items', data, {
            withCredentials: true,
            headers: getAuthHeader()
        });
        return response.data.data;
    },

    getItem: async (itemId) => {
        const response = await axios.get(`/api/warehouse-items/admin/items/${itemId}`, {
            withCredentials: true,
            headers: getAuthHeader()
        });
        return response.data.data;
    },

    updateItem: async (itemId, data) => {
        const response = await axios.patch(`/api/warehouse-items/admin/items/${itemId}`, data, {
            withCredentials: true,
            headers: getAuthHeader()
        });
        return response.data.data;
    },

    deleteItem: async (itemId) => {
        await axios.delete(`/api/warehouse-items/admin/items/${itemId}`, {
            withCredentials: true,
            headers: getAuthHeader()
        });
    },

    // ─── Transactions ─────────────────────────────────────────────────────────
    listTransactions: async (params = {}) => {
        const response = await axios.get('/api/warehouse-items/admin/transactions', {
            params,
            withCredentials: true,
            headers: getAuthHeader()
        });
        return response.data;
    },

    createTransaction: async (data) => {
        const response = await axios.post('/api/warehouse-items/admin/transactions', data, {
            withCredentials: true,
            headers: getAuthHeader()
        });
        return response.data.data;
    },

    deleteTransaction: async (transactionId) => {
        await axios.delete(`/api/warehouse-items/admin/transactions/${transactionId}`, {
            withCredentials: true,
            headers: getAuthHeader()
        });
    },

    // ─── Stock ────────────────────────────────────────────────────────────────
    getTotalStock: async () => {
        const response = await axios.get('/api/warehouse-items/admin/stock/total', {
            withCredentials: true,
            headers: getAuthHeader()
        });
        return response.data.data;
    },

    getStockByItem: async (itemId) => {
        const response = await axios.get(`/api/warehouse-items/admin/stock/by-item/${itemId}`, {
            withCredentials: true,
            headers: getAuthHeader()
        });
        return response.data.data;
    },

    getStockByWarehouse: async (warehouseId) => {
        const response = await axios.get(`/api/warehouse-items/admin/stock/by-warehouse/${warehouseId}`, {
            withCredentials: true,
            headers: getAuthHeader()
        });
        return response.data.data;
    }
};