import {API_URI, ARCHIVES_API, DEFAULT_LIMIT, OTP_API, secondsToDateTime, VIDEOS_API} from "./components/Common";
import {toast} from 'react-semantic-toasts';

function timeoutPromise(ms, promise) {
    // Create a timeout wrapper around a promise.  If the timeout is reached, throw an error.  Otherwise, return
    // the results of the promise.
    return new Promise((resolve, reject) => {
        const timeoutId = setTimeout(() => {
            reject(new Error("promise timeout"))
        }, ms);
        promise.then(
            (res) => {
                clearTimeout(timeoutId);
                resolve(res);
            },
            (err) => {
                clearTimeout(timeoutId);
                reject(err);
            }
        );
    })
}

async function apiCall(url, method, body, ms = 10000) {
    let init = {method};
    if (body !== undefined) {
        init.body = JSON.stringify(body);
    }

    // Create a fetch promise, this will be awaited by the timeout.
    let promise = fetch(url, init);

    try {
        // await the response or error.
        let response = await timeoutPromise(ms, promise);
        if (200 <= response.status < 300) {
            // Request was successful.
            return response;
        }
        // Request encountered an error.
        let copy = response.clone();
        let code = (await copy.json())['code'];
        if (response.status === 403 && code === 17) {
            toast({
                type: 'error',
                title: 'WROL Mode is enabled!',
                description: 'This functionality is not enabled while WROL Mode is enabled!',
                time: 5000,
            });
        }
        return response;
    } catch (e) {
        // Timeout, or some other exception.
        if (e.message === 'promise timeout') {
            toast({
                type: 'error',
                title: 'Server failed to respond!',
                description: 'Timeout while waiting for server response.  See server logs.',
                time: 5000,
            });
        } else {
            toast({
                type: 'error',
                title: 'Error!',
                description: 'See client logs',
                time: 5000,
            });
        }
        throw e;
    }
}

// Convenience functions for API calls.
let apiGet = async (url) => {
    return await apiCall(url, 'GET')
};
let apiDelete = async (url) => {
    return await apiCall(url, 'DELETE')
};
let apiPost = async (url, body) => {
    return await apiCall(url, 'POST', body)
};
let apiPut = async (url, body) => {
    return await apiCall(url, 'PUT', body)
};
let apiPatch = async (url, body) => {
    return await apiCall(url, 'PATCH', body)
};


export async function updateChannel(link, channel) {
    return await apiPut(`${VIDEOS_API}/channels/${link}`, channel);
}

export async function createChannel(channel) {
    return await apiPost(`${VIDEOS_API}/channels`, channel);
}

export async function deleteChannel(channel_link) {
    return apiDelete(`${VIDEOS_API}/channels/${channel_link}`);
}

export async function getChannels() {
    let response = await apiGet(`${VIDEOS_API}/channels`);
    return (await response.json())['channels'];
}

export async function getChannel(link) {
    let response = await apiGet(`${VIDEOS_API}/channels/${link}`);
    return (await response.json())['channel'];
}

export async function searchVideos(offset, limit, channel_link, searchStr, order_by, filters) {
    // Build a search query to retrieve a list of videos from the API
    offset = offset || 0;
    limit = limit || DEFAULT_LIMIT;
    let body = {offset, limit, filters};

    if (searchStr) {
        body.search_str = searchStr;
    }
    if (channel_link) {
        body.channel_link = channel_link;
    }
    body.order_by = order_by ? order_by : 'rank'

    let response = await apiPost(`${VIDEOS_API}/search`, body);
    if (response.status === 200) {
        let data = await response.json();
        return [data['videos'], data['totals']['videos']];
    } else {
        throw Error(`Unable to search videos`);
    }
}

export async function getVideo(video_id) {
    let response = await apiGet(`${VIDEOS_API}/video/${video_id}`);
    let data = await response.json();
    return [data['video'], data['prev'], data['next']];
}

export async function deleteVideo(video_id) {
    let response = await apiDelete(`${VIDEOS_API}/video/${video_id}`);
    if (response.status !== 204) {
        toast({
            type: 'error',
            title: 'Unexpected server response',
            description: 'Failed to delete video.  See server logs.',
            time: 5000,
        });
    }
}

export async function getDirectories(search_str) {
    let form_data = {'search_str': search_str || null};
    let response = await apiPost(`${VIDEOS_API}/directories`, form_data);
    if (response.status === 200) {
        return (await response.json())['directories'];
    }
    return [];
}

export async function getConfig() {
    let response = await apiGet(`${API_URI}/settings`);
    let data = await response.json();
    return data['config'];
}

export async function saveConfig(config) {
    return await apiPatch(`${API_URI}/settings`, config);
}

export async function getDownloads() {
    let response = await apiGet(`${API_URI}/download`);
    let data = await response.json();
    return data;
}


export async function validateRegex(regex) {
    let response = await apiPost(`${API_URI}/valid_regex`, {regex});
    return (await response.json())['valid'];
}

export async function favoriteVideo(video_id, favorite) {
    let body = {favorite: favorite, video_id};
    let response = await apiPost(`${VIDEOS_API}/favorite`, body);
    return (await response.json())['favorite'];
}

export async function getStatistics() {
    let response = await apiGet(`${VIDEOS_API}/statistics`);
    return (await response.json())['statistics'];
}

export async function refresh() {
    let response = await apiPost(`${VIDEOS_API}/refresh`);
    return await response.json();
}

export async function download() {
    let response = await apiPost(`${VIDEOS_API}/download`);
    return await response.json();
}

export async function downloadChannel(link) {
    let url = `${VIDEOS_API}/download/${link}`;
    let response = await apiPost(url);
    let json = await response.json();
    if (response.status === 400 && json['code'] === 30) {
        toast({
            type: 'error',
            title: 'Cannot Download!',
            description: 'This channel does not have a download record.  Create one!',
            time: 5000,
        });
    }
}

export async function refreshChannel(link) {
    let url = `${VIDEOS_API}/refresh/${link}`;
    await fetch(url, {method: 'POST'});
}

export async function encryptOTP(otp, plaintext) {
    let body = {otp, plaintext};
    let response = await apiPost(`${OTP_API}/encrypt_otp`, body);
    if (response.status !== 200) {
        toast({
            type: 'error',
            title: 'Error!',
            description: 'Failed to encrypt OTP',
            time: 5000,
        });
        return;
    }
    return await response.json();
}

export async function decryptOTP(otp, ciphertext) {
    let body = {otp, ciphertext};
    let response = await apiPost(`${OTP_API}/decrypt_otp`, body);
    if (response.status !== 200) {
        toast({
            type: 'error',
            title: 'Error!',
            description: 'Failed to decrypt OTP',
            time: 5000,
        });
        return;
    }
    return await response.json();
}

export async function getCategories() {
    let response = await apiGet(`${API_URI}/inventory/categories`);
    return (await response.json())['categories'];
}

export async function getBrands() {
    let response = await apiGet(`${API_URI}/inventory/brands`);
    return (await response.json())['brands'];
}

export async function getInventories() {
    let response = await apiGet(`${API_URI}/inventory`);
    return (await response.json())['inventories'];
}

export async function getInventory(inventoryId) {
    let response = await apiGet(`${API_URI}/inventory/${inventoryId}`);
    return await response.json();
}

export async function saveInventory(inventory) {
    return await apiPost(`${API_URI}/inventory`, inventory);
}

export async function updateInventory(inventoryId, inventory) {
    delete inventory['id'];
    return await apiPut(`${API_URI}/inventory/${inventoryId}`, inventory);
}

export async function deleteInventory(inventoryId) {
    return await apiDelete(`${API_URI}/inventory/${inventoryId}`);
}

export async function getItems(inventoryId) {
    let response = await apiGet(`${API_URI}/inventory/${inventoryId}/item`);
    return await response.json();
}

export async function saveItem(inventoryId, item) {
    return await apiPost(`${API_URI}/inventory/${inventoryId}/item`, item);
}

export async function updateItem(itemId, item) {
    return await apiPut(`${API_URI}/inventory/item/${itemId}`, item);
}

export async function deleteItems(itemIds) {
    let i = itemIds.join(',');
    await apiDelete(`${API_URI}/inventory/item/${i}`);
}

export async function deleteArchive(archive_id) {
    return await apiDelete(`${API_URI}/archive/${archive_id}`);
}

export async function searchArchives(offset, limit, domain = null, searchStr = null) {
    // Build a search query to retrieve a list of videos from the API
    offset = parseInt(offset || 0);
    limit = parseInt(limit || DEFAULT_LIMIT);
    let body = {offset, limit};
    if (domain) {
        body['domain'] = domain;
    }
    if (searchStr) {
        body['search_str'] = searchStr;
    }

    let response = await apiPost(`${ARCHIVES_API}/search`, body);
    if (response.status === 200) {
        let data = await response.json();
        return [data['archives'], data['totals']['archives']];
    } else {
        toast({
            type: 'error',
            title: 'Unable to search archives',
            description: 'Cannot search archives.  See server logs.',
            time: 5000,
        });
    }
}

export async function refreshArchives() {
    return await apiPost(`${ARCHIVES_API}/refresh`);
}

export async function fetchDomains() {
    let response = await apiGet(`${ARCHIVES_API}/domains`);
    if (response.status === 200) {
        let data = await response.json();
        return [data['domains'], data['totals']['domains']];
    } else {
        toast({
            type: 'error',
            title: 'Domains Error',
            description: 'Unable to fetch Domains.  See server logs.',
            time: 5000,
        });
    }
}

export async function postDownload(urls, downloader) {
    let body = {urls: urls, downloader: downloader};
    let response = await apiPost(`${API_URI}/download`, body);
    return response;
}

export async function killDownload(download_id) {
    let response = await apiPost(`${API_URI}/download/${download_id}/kill`);
    return response;
}

export async function killDownloads() {
    let response = await apiPost(`${API_URI}/download/kill`);
    console.log('killDownloads', response);
    return response;
}

export async function startDownloads() {
    let response = await apiPost(`${API_URI}/download/enable`);
    console.log('startDownloads', response);
    return response;
}

export async function getDownloaders() {
    try {
        let response = await apiGet(`${API_URI}/downloaders`);
        return await response.json();
    } catch (e) {
        console.log('getDownloaders', e);
        return {};
    }
}

const replaceFileDatetimes = (files) => {
    for (let i = 0; i < files.length; i++) {
        let file = files[i]['modified'];
        if (file['modified']) {
            files[i]['modified'] = secondsToDateTime(file['modified']);
        }
    }
    return files;
}

export async function filesSearch(offset, limit, searchStr) {
    const body = {search_str: searchStr, offset: parseInt(offset), limit: parseInt(limit)};
    const response = await apiPost(`${API_URI}/files/search`, body);

    if (response.status === 200) {
        let data = await response.json();
        let [files, total] = [data['files'], data['totals']['files']];
        files = replaceFileDatetimes(files);
        return [files, total];
    } else {
        toast({
            type: 'error',
            title: 'Unable to search files',
            description: 'Cannot search files.  See server logs.',
            time: 5000,
        });
    }
}

export async function refreshFiles() {
    return await apiPost(`${API_URI}/files/refresh`);
}

export async function getFiles(directories) {
    let body = {directories: directories || []};
    let response = await apiPost(`${API_URI}/files`, body);
    let {files} = await response.json();
    files = replaceFileDatetimes(files);
    return files;
}

export async function deleteFile(file) {
    let body = {file: file};
    await apiPost(`${API_URI}/files/delete`, body);
}

export async function getVersion() {
    let response = await apiGet(`${API_URI}/settings`);
    let data = await response.json();
    return data['version'];
}

export async function getHotspotStatus() {
    let response = await apiGet(`${API_URI}/hotspot`);
    if (response.status === 200) {
        let {status} = await response.json();
        return status;
    } else {
        let code = (await response.json())['code'];
        if (response.status === 400 && code === 34) {
            // Must not be running on a RPi.  Don't warn the user.
            return null;
        } else {
            toast({
                type: 'error',
                title: "Can't get Hotspot status",
                description: 'Failed to get Hotspot status.  Check client and server logs.',
                time: 5000,
            });
        }
    }
    return null;
}

export async function setHotspot(on) {
    let response;
    if (on) {
        response = await apiPost(`${API_URI}/hotspot/on`);
    } else {
        response = await apiPost(`${API_URI}/hotspot/off`);
    }
    if (response.status === 204) {
        return null;
    } else {
        let code = (await response.json())['code'];
        if (code === 34) {
            toast({
                type: 'error',
                title: 'Unsupported!',
                description: 'Hotspot is only supported on a Raspberry Pi!',
                time: 5000,
            });
        } else {
            toast({
                type: 'error',
                title: 'Error!',
                description: 'Could not modify hotspot.  See server logs.',
                time: 5000,
            });
        }
    }
}

export async function getThrottleStatus() {
    let response = await apiGet(`${API_URI}/throttle`);
    if (response.status === 200) {
        let {status} = await response.json();
        return status;
    } else {
        let code = (await response.json())['code'];
        if (response.status === 400 && code === 34) {
            // Must not be running on a RPi.  Don't warn the user.
            return null;
        } else {
            toast({
                type: 'error',
                title: "Can't get throttle status",
                description: 'Failed to get CPU Throttle status.  Check client and server logs.',
                time: 5000,
            });
        }
    }
    return null;
}

export async function setThrottle(on) {
    let response;
    if (on) {
        response = await apiPost(`${API_URI}/throttle/on`);
    } else {
        response = await apiPost(`${API_URI}/throttle/off`);
    }
    if (response.status === 204) {
        return null;
    } else {
        let code = (await response.json())['code'];
        if (code === 34) {
            toast({
                type: 'error',
                title: 'Unsupported!',
                description: 'Throttle is only supported on a Raspberry Pi!',
                time: 5000,
            });
        } else {
            toast({
                type: 'error',
                title: 'Error!',
                description: 'Could not modify throttle.  See server logs.',
                time: 5000,
            });
        }
    }
}