import { apiRequest } from "@/utils/api/apiRequest";
import { isValidDate } from "@/helpers/Date";

export const listSchedule = async (startDate?: string, endDate?: string) => {
    const token = localStorage.getItem('token');

    if (!token) {
        throw new Error('No token found in localStorage.');
    }

    if (startDate && !isValidDate(startDate)) {
        throw new Error('Invalid start date');
    }
    if (endDate && !isValidDate(endDate)) {
        throw new Error('Invalid end date');
    }

    const params = new URLSearchParams();
    if (startDate) params.append('start', startDate);
    if (endDate) params.append('end', endDate);

    const endpoint = `/api/schedule${params.toString() ? `?${params.toString()}` : ''}`;

    return apiRequest.get(endpoint, {
        headers: {
            Authorization: `Bearer ${token}`,
        }
    })
        .then((scheduleData) => scheduleData?.payload?.schedule);
};

export const getScheduleForDate = async (date: string) => {
    const token = localStorage.getItem('token');

    if (!token) {
        throw new Error('No token found in localStorage.');
    }

    if (!isValidDate(date)) {
        throw new Error('Invalid date');
    }

    const endpoint = `/api/schedule/${date}`;

    return apiRequest.get(endpoint, {
        headers: {
            Authorization: `Bearer ${token}`,
        }
    })
        .then((scheduleData) => scheduleData?.payload?.schedule)
        .catch((err) => {
            throw err;
        });
};

// Update the schedule for a specific date (e.g., mark as skipped)
export const updateScheduleForDate = async (date: string, isSkipped: boolean) => {
    const token = localStorage.getItem('token');

    if (!token) {
        throw new Error('No token found in localStorage.');
    }

    if (!isValidDate(date)) {
        throw new Error('Invalid date');
    }

    const endpoint = `/api/schedule/${date}`;

    return apiRequest.put(endpoint, { is_skipped: isSkipped }, {
        headers: {
            Authorization: `Bearer ${token}`,
        }
    })
        .then((scheduleData) => scheduleData?.payload?.schedule)
        .catch((err) => {
            throw err;
        });
};

// Generate a new schedule (optional: overwrite the existing one)
export const generateSchedule = async (overwrite: boolean) => {
    const token = localStorage.getItem('token');

    if (!token) {
        throw new Error('No token found in localStorage.');
    }

    const endpoint = `/api/schedule/generate`;

    return apiRequest.post(endpoint, { overwrite }, {
        headers: {
            Authorization: `Bearer ${token}`,
        }
    })
        .then((scheduleData) => scheduleData?.payload?.schedule)
        .catch((err) => {
            throw err;
        });
};

export const scheduleUserDish = async (date: string, user_id: number, user_dish_id: number|null, skipped: boolean = false) => {
    const token = localStorage.getItem('token');

    if (!token) throw new Error('No token found in localStorage.');

    const endpoint = `/api/schedule/${date}/user-dishes`;

    return apiRequest.post(endpoint, { user_dish_id, user_id, skipped }, { headers: { Authorization: `Bearer ${token}`} })
        .then((scheduleData) => scheduleData?.payload?.schedule)
        .catch((err) => { throw err });
};