import { toast } from 'vue-sonner';
import type { DirectoryEntry, FileType } from '~/types';
import type { Warren } from '~/types/warrens';

export async function getWarrens(): Promise<Record<string, Warren>> {
    const { data: arr, error } = await useFetch<Warren[]>(
        getApiUrl('warrens'),
        {
            method: 'GET',
        }
    );

    if (arr.value == null) {
        throw error.value?.name;
    }

    const warrens: Record<string, Warren> = {};

    for (const warren of arr.value) {
        warrens[warren.id] = warren;
    }

    return warrens;
}

export async function getWarrenDirectory(
    path: string
): Promise<DirectoryEntry[]> {
    // eslint-disable-next-line prefer-const
    let [warrenId, rest] = splitOnce(path, '/');

    if (rest == null) {
        rest = '';
    } else {
        rest = '/' + rest;
    }

    const { data: entries, error } = await useFetch<DirectoryEntry[]>(
        getApiUrl(`warrens/${warrenId}/get${rest}`),
        {
            method: 'GET',
        }
    );

    if (entries.value == null) {
        throw error.value?.name;
    }

    return entries.value;
}

export async function createDirectory(
    path: string,
    directoryName: string
): Promise<{ success: boolean }> {
    // eslint-disable-next-line prefer-const
    let [warrenId, rest] = splitOnce(path, '/');

    if (rest == null) {
        rest = '';
    } else {
        rest += '/';
    }

    const { status } = await useFetch(
        getApiUrl(`warrens/${warrenId}/create/${rest}${directoryName}`),
        {
            method: 'POST',
        }
    );

    if (status.value !== 'success') {
        toast.error('Directory', {
            id: 'CREATE_DIRECTORY_TOAST',
            description: `Failed to create directory`,
        });
        return { success: false };
    }

    await refreshNuxtData('current-directory');

    toast.success('Directory', {
        id: 'CREATE_DIRECTORY_TOAST',
        description: `Successfully created directory: ${directoryName}`,
    });

    return { success: true };
}

export async function deleteWarrenEntry(
    path: string,
    directoryName: string,
    fileType: FileType
): Promise<{ success: boolean }> {
    // eslint-disable-next-line prefer-const
    let [warrenId, rest] = splitOnce(path, '/');

    if (rest == null) {
        rest = '';
    } else {
        rest = '/' + rest;
    }

    const { status } = await useFetch(
        getApiUrl(
            `warrens/${warrenId}/delete${rest}/${directoryName}?fileType=${fileType}`
        ),
        {
            method: 'DELETE',
        }
    );

    const toastTitle = fileType.slice(0, 1).toUpperCase() + fileType.slice(1);

    if (status.value !== 'success') {
        toast.error(toastTitle, {
            id: 'DELETE_DIRECTORY_TOAST',
            description: `Failed to delete ${fileType}`,
        });
        return { success: false };
    }

    await refreshNuxtData('current-directory');

    toast.success(toastTitle, {
        id: 'DELETE_DIRECTORY_TOAST',
        description: `Successfully deleted ${fileType}: ${directoryName}`,
    });
    return { success: true };
}

export async function uploadToWarren(
    path: string,
    files: FileList,
    onProgress: ((loaded: number, total: number) => void) | undefined
): Promise<{ success: boolean }> {
    const body = new FormData();
    for (const file of files) {
        body.append('files', file);
    }

    // eslint-disable-next-line prefer-const
    let [warrenId, rest] = splitOnce(path, '/');

    if (rest == null) {
        rest = '';
    } else {
        rest = '/' + rest;
    }

    const xhr = new XMLHttpRequest();
    xhr.open('POST', getApiUrl(`warrens/${warrenId}/upload${rest}`));
    xhr.upload.onprogress = (e) => {
        onProgress?.(e.loaded, e.total);
    };

    const promise = new Promise<void>((res, rej) => {
        xhr.onreadystatechange = (_) => {
            if (xhr.readyState !== 4) {
                return;
            }

            if (xhr.status === 200) {
                res();
            } else {
                rej();
            }
        };
    });

    xhr.send(body);

    try {
        await promise;
    } catch {
        toast.error('Upload', {
            id: 'UPLOAD_FILE_TOAST',
            description: `Failed to upload`,
        });
        return { success: false };
    }

    await refreshNuxtData('current-directory');

    toast.success('Upload', {
        id: 'UPLOAD_FILE_TOAST',
        description: `Successfully uploaded ${files.length} file${files.length !== 1 ? 's' : ''}`,
    });

    return { success: true };
}