import {apiFetch} from './api.js';
import {GAME_STATUSES} from './limits.js';

// Radix Select has no empty value, so "no priority" needs its own value in the form.
export const NO_PRIORITY = 'NONE';

export const parseStatus = (value) => (GAME_STATUSES.includes(value) ? value : null);

export const toBacklogRequest = ({status, rating, notes, priority}) => ({
    status,
    rating: rating || null,
    notes: notes?.trim() ? notes : null,
    priority: priority === NO_PRIORITY ? null : priority,
});

/**
 * The fields of `form` that differ from `saved`, in request form: what saveBacklogEntry sends.
 */
export const changedFields = (saved, form) => {
    const before = toBacklogRequest(saved);
    return Object.fromEntries(Object.entries(toBacklogRequest(form)).filter(([field, value]) => value !== before[field]));
};

/**
 * PATCH /api/library/games/{appid}/backlog with only the changed fields, so an older tab keeps the newer ones; null
 * clears a field. Answers the whole entry. The caller handles the response status.
 *
 * @param changes see changedFields
 */
export const saveBacklogEntry = (appid, changes) =>
    apiFetch(`${import.meta.env.VITE_CORE_API_URL}/api/library/games/${appid}/backlog`, {
        method: 'PATCH',
        headers: {'Content-Type': 'application/json'},
        body: JSON.stringify(changes),
    });

/**
 * PUT /api/library/games/{appid}/status. The caller handles the response status.
 */
export const saveGameStatus = (appid, status) =>
    apiFetch(`${import.meta.env.VITE_CORE_API_URL}/api/library/games/${appid}/status`, {
        method: 'PUT',
        headers: {'Content-Type': 'application/json'},
        body: JSON.stringify({status}),
    });

/**
 * PUT /api/library/games/{appid}/finished-hint: "Not yet" on the finished hint. Answers 204.
 *
 * @param dismissed the hint type the user answered, ENDING or PLAYTIME
 */
export const dismissFinishedHint = (appid, dismissed) =>
    apiFetch(`${import.meta.env.VITE_CORE_API_URL}/api/library/games/${appid}/finished-hint`, {
        method: 'PUT',
        headers: {'Content-Type': 'application/json'},
        body: JSON.stringify({dismissed}),
    });

export const libraryQuery = ({page, size, sort, status, q, maxMinutes, hidden, hideDuplicates}) => {
    const params = new URLSearchParams({page: String(page), size: String(size), sort});
    if (hidden) params.set('hidden', 'true');
    if (hideDuplicates) params.set('hideDuplicates', 'true');
    if (status) params.set('status', status);
    if (q?.trim()) params.set('q', q.trim());
    if (maxMinutes) params.set('maxMinutes', String(maxMinutes));
    return params.toString();
};

export const backlogShare = (summary) =>
    summary?.total ? Math.round(((summary.byStatus?.BACKLOG ?? 0) / summary.total) * 100) : 0;