import { toast } from 'vue-sonner';
import type { DirectoryEntry } from '#shared/types';
import type { ApiResponse } from '#shared/types/api';
import type { WarrenData } from '#shared/types/warrens';
import { getApiHeaders, getAuthHeader } from '.';

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

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

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

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

    return warrens;
}

export async function getWarrenDirectory(
    warrenId: string,
    path: string
): Promise<{ files: DirectoryEntry[]; parent: DirectoryEntry | null }> {
    const { data, error } = await useFetch<
        ApiResponse<{ files: DirectoryEntry[]; parent: DirectoryEntry | null }>
    >(getApiUrl(`warrens/files/ls`), {
        method: 'POST',
        headers: getApiHeaders(),
        body: JSON.stringify({
            warrenId,
            path,
        }),
        key: `${warrenId}-${path}`,
    });

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

    const { files, parent } = data.value.data;

    return { files, parent };
}

export async function createDirectory(
    warrenId: string,
    path: string,
    directoryName: string
): Promise<{ success: boolean }> {
    if (!path.endsWith('/')) {
        path += '/';
    }

    path += directoryName;

    const { status } = await useFetch(getApiUrl(`warrens/files/mkdir`), {
        method: 'POST',
        headers: getApiHeaders(),
        body: JSON.stringify({
            warrenId,
            path,
        }),
    });

    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 warrenRm(
    warrenId: string,
    paths: string[],
    force: boolean
): Promise<{ success: boolean }> {
    const { status } = await useFetch(getApiUrl(`warrens/files/rm`), {
        method: 'POST',
        headers: getApiHeaders(),
        body: JSON.stringify({
            warrenId,
            paths,
            force,
        }),
    });

    const TOAST_TITLE = 'Delete';

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

    await refreshNuxtData('current-directory');

    toast.success(TOAST_TITLE, {
        id: 'WARREN_RM_TOAST',
        description: `Successfully deleted files`,
    });
    return { success: true };
}

export async function deleteWarrenDirectory(
    warrenId: string,
    path: string,
    directoryName: string,
    force: boolean
): Promise<{ success: boolean }> {
    if (!path.endsWith('/')) {
        path += '/';
    }

    path += directoryName;

    const { status } = await useFetch(getApiUrl(`warrens/files/rm`), {
        method: 'POST',
        headers: getApiHeaders(),
        body: JSON.stringify({
            warrenId,
            paths: [path],
            force,
        }),
    });

    const TOAST_TITLE = 'Directory';

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

    await refreshNuxtData('current-directory');

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

export async function deleteWarrenFile(
    warrenId: string,
    path: string,
    fileName: string
): Promise<{ success: boolean }> {
    if (!path.endsWith('/')) {
        path += '/';
    }

    path += fileName;

    const { status } = await useFetch(getApiUrl(`warrens/files/rm`), {
        method: 'POST',
        headers: getApiHeaders(),
        body: JSON.stringify({
            warrenId,
            paths: [path],
            force: false,
        }),
    });

    const TOAST_TITLE = 'File';

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

    await refreshNuxtData('current-directory');

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

export async function uploadToWarren(
    warrenId: string,
    path: string,
    files: FileList,
    onProgress: ((loaded: number, total: number) => void) | undefined
): Promise<{ success: boolean }> {
    const xhr = new XMLHttpRequest();
    xhr.open('POST', getApiUrl(`warrens/files/save`));
    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', path);
    for (const file of files) {
        body.append('files', file);
    }

    const header = getAuthHeader();
    if (header != null) {
        xhr.setRequestHeader(header[0], header[1]);
    }

    xhr.send(body);

    try {
        await promise;
    } catch {
        return { success: false };
    }

    await refreshNuxtData('current-directory');

    return { success: true };
}

export async function renameWarrenEntry(
    warrenId: string,
    path: string,
    currentName: string,
    newName: string
): Promise<{ success: boolean }> {
    if (!path.endsWith('/')) {
        path += '/';
    }
    let targetPath = path;
    targetPath += newName;
    path += currentName;

    const { status } = await useFetch(getApiUrl(`warrens/files/mv`), {
        method: 'POST',
        headers: getApiHeaders(),
        body: JSON.stringify({
            warrenId,
            paths: [path],
            targetPath,
        }),
    });

    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 };
}

export async function fetchFile(
    warrenId: string,
    path: string,
    fileName: string
): Promise<{ success: true; data: Blob } | { success: false }> {
    return fetchFiles(warrenId, path, [fileName]);
}

export async function fetchFiles(
    warrenId: string,
    path: string,
    fileNames: string[]
): Promise<{ success: true; data: Blob } | { success: false }> {
    if (!path.endsWith('/')) {
        path += '/';
    }
    const paths = [];
    for (const fileName of fileNames) {
        paths.push(path + fileName);
    }

    const { data, error } = await useFetch<Blob>(
        getApiUrl(
            `warrens/files/cat?warrenId=${warrenId}&paths=${paths.join(':')}`
        ),
        {
            method: 'GET',
            headers: getApiHeaders(),
            responseType: 'blob',
            cache: 'default',
        }
    );

    if (data.value == null || error.value != null) {
        return {
            success: false,
        };
    }

    return {
        success: true,
        data: data.value,
    };
}

export async function fetchFileStream(
    warrenId: string,
    path: string,
    fileName: string
): Promise<
    { success: true; stream: ReadableStream<Uint8Array> } | { success: false }
> {
    if (!path.endsWith('/')) {
        path += '/';
    }
    path += fileName;

    const { data, error } = await useFetch<ReadableStream<Uint8Array>>(
        getApiUrl(`warrens/files/cat?warrenId=${warrenId}&paths=${path}`),
        {
            method: 'GET',
            headers: getApiHeaders(),
            responseType: 'stream',
            cache: 'default',
        }
    );

    if (data.value == null || error.value != null) {
        return {
            success: false,
        };
    }

    return {
        success: true,
        stream: data.value,
    };
}

export async function moveFiles(
    warrenId: string,
    currentPaths: string[],
    targetPath: string
): Promise<{ success: boolean }> {
    const { status } = await useFetch(getApiUrl(`warrens/files/mv`), {
        method: 'POST',
        headers: getApiHeaders(),
        body: JSON.stringify({
            warrenId,
            paths: currentPaths,
            targetPath: targetPath,
        }),
    });

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

    await refreshNuxtData('current-directory');

    toast.success('Rename', {
        id: 'MOVE_FILE_TOAST',
        description: `Successfully moved file`,
    });

    return {
        success: true,
    };
}

export async function copyFile(
    warrenId: string,
    currentPath: string,
    targetPath: string
): Promise<{ success: boolean }> {
    const { status } = await useFetch(getApiUrl(`warrens/files/cp`), {
        method: 'POST',
        headers: getApiHeaders(),
        body: JSON.stringify({
            warrenId,
            path: currentPath,
            targetPath: targetPath,
        }),
    });

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

    await refreshNuxtData('current-directory');

    toast.success('Copy', {
        id: 'COPY_FILE_TOAST',
        description: `Successfully copied file`,
    });

    return {
        success: true,
    };
}