const API_BASE = '/api';

const api = {
    async getConfig() {
        const res = await fetch(`${API_BASE}/config`);
        return res.json();
    },
    async getProducts(params = {}) {
        const query = new URLSearchParams(params).toString();
        const res = await fetch(`${API_BASE}/products${query ? '?' + query : ''}`, {
            credentials: 'include'
        });
        return res.json();
    },
    async getCategories() {
        const res = await fetch(`${API_BASE}/categories`);
        return res.json();
    },
    async getMetalPrices() {
        const res = await fetch(`${API_BASE}/shop-prices`);
        return res.json();
    },
    async createOrder(data) {
        const res = await fetch(`${API_BASE}/orders`, {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            credentials: 'include',
            body: JSON.stringify(data)
        });
        return res.json();
    },
    async getOrders() {
        const res = await fetch(`${API_BASE}/orders`, {
            credentials: 'include'
        });
        if (!res.ok) throw new Error('Failed to get orders');
        return res.json();
    },
    async authLiff(accessToken) {
        const res = await fetch(`${API_BASE}/auth/liff`, {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            credentials: 'include',
            body: JSON.stringify({ access_token: accessToken })
        });
        if (!res.ok) throw new Error('Auth failed');
        return res.json();
    },
    async getMe() {
        const res = await fetch(`${API_BASE}/auth/me`, {
            credentials: 'include'
        });
        if (!res.ok) throw new Error('Unauthorized');
        return res.json();
    },
    async logout() {
        const res = await fetch(`${API_BASE}/auth/logout`, {
            method: 'POST',
            credentials: 'include'
        });
        return res.json();
    },
    async getProfile() {
        const res = await fetch(`${API_BASE}/profile`, {
            credentials: 'include'
        });
        if (!res.ok) throw new Error('Failed to get profile');
        return res.json();
    },
    async updateProfile(data) {
        const res = await fetch(`${API_BASE}/profile`, {
            method: 'PUT',
            headers: { 'Content-Type': 'application/json' },
            credentials: 'include',
            body: JSON.stringify(data)
        });
        if (!res.ok) throw new Error('Failed to update profile');
        return res.json();
    },
    async cancelOrder(orderNumber) {
        const res = await fetch(`${API_BASE}/orders/${orderNumber}/cancel`, {
            method: 'POST',
            credentials: 'include'
        });
        if (!res.ok) {
            const err = await res.json().catch(() => ({}));
            throw new Error(err.detail || '取消失敗');
        }
        return res.json();
    },
    async confirmReceived(orderNumber) {
        const res = await fetch(`${API_BASE}/orders/${orderNumber}/confirm-received`, {
            method: 'POST',
            credentials: 'include'
        });
        if (!res.ok) {
            const err = await res.json().catch(() => ({}));
            throw new Error(err.detail || '確認收貨失敗');
        }
        return res.json();
    },
    async getAnnouncement() {
        const res = await fetch(`${API_BASE}/announcement`);
        return res.json();
    }
};