import { toast } from 'vue-sonner';
import type { DirectoryEntry } from '~/types';
import type { ApiResponse } from '~/types/api';
import type { Warren } from '~/types/warrens';
import { getApiHeaders } from '.';

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

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

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

    for (const warren of data.value.data.warrens) {
        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 = '/' + decodeURI(rest);
    }

    const { data, error } = await useFetch<
        ApiResponse<{ files: DirectoryEntry[] }>
    >(getApiUrl(`warrens/files`), {
        method: 'POST',
        headers: {
            'content-type': 'application/json',
        },
        body: JSON.stringify({
            warrenId,
            path: rest,
        }),
    });

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

    const { files } = data.value.data;

    return files;
}

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 = '/' + decodeURI(rest) + '/';
    }

    rest += directoryName;

    const { status } = await useFetch(getApiUrl(`warrens/files/directory`), {
        method: 'POST',
        headers: {
            'content-type': 'application/json',
        },
        body: JSON.stringify({
            warrenId,
            path: rest,
        }),
    });

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

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

    rest += directoryName;

    const { status } = await useFetch(getApiUrl(`warrens/files/directory`), {
        method: 'DELETE',
        headers: {
            'content-type': 'application/json',
        },
        body: JSON.stringify({
            warrenId,
            path: rest,
            force,
        }),
    });

    const TOAST_TITLE = 'Directory';

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

    await refreshNuxtData('current-directory');

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

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

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

    rest += fileName;

    const { status } = await useFetch(getApiUrl(`warrens/files/file`), {
        method: 'DELETE',
        headers: {
            'content-type': 'application/json',
        },
        body: JSON.stringify({
            warrenId,
            path: rest,
        }),
    });

    const TOAST_TITLE = 'File';

    if (status.value !== 'success') {
        toast.error(TOAST_TITLE, {
            id: 'DELETE_FILE_TOAST',
            description: `Failed to delete file`,
        });
        return { success: false };
    }

    await refreshNuxtData('current-directory');

    toast.success(TOAST_TITLE, {
        id: 'DELETE_FILE_TOAST',
        description: `Successfully deleted ${fileName}`,
    });
    return { success: true };
}

export async function uploadToWarren(
    path: string,
    files: FileList,
    onProgress: ((loaded: number, total: number) => void) | undefined
): Promise<{ success: boolean }> {
    // eslint-disable-next-line prefer-const
    let [warrenId, rest] = splitOnce(path, '/');

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

    const xhr = new XMLHttpRequest();
    xhr.open('POST', getApiUrl(`warrens/files/upload`));
    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 && xhr.status <= 300) {
                res();
            } else {
                rej();
            }
        };
    });

    const body = new FormData();
    body.set('warrenId', warrenId);
    body.set('path', rest);
    for (const file of files) {
        body.append('files', file);
    }

    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 };
}

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

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

    rest += currentName;

    const { status } = await useFetch(getApiUrl(`warrens/files/rename`), {
        method: 'PATCH',
        headers: {
            'content-type': 'application/json',
        },
        body: JSON.stringify({
            warrenId,
            path: rest,
            newName,
        }),
    });

    if (status.value !== 'success') {
        toast.error('Rename', {
            id: 'RENAME_FILE_TOAST',
            description: `Failed to rename ${currentName}`,
        });
        return { success: false };
    }

    await refreshNuxtData('current-directory');

    toast.success('Rename', {
        id: 'RENAME_FILE_TOAST',
        description: `Successfully renamed ${currentName} to ${newName}`,
    });

    return { success: true };
}