import { HUB_URL } from "../consts";
import { createApiError } from "../error";
import type { ApiCreateRepoPayload } from "../types/api/api-create-repo";
import type { CredentialsParams, RepoDesignation, SpaceSdk } from "../types/public";
import { base64FromBytes } from "../utils/base64FromBytes";
import { checkCredentials } from "../utils/checkCredentials";
import { toRepoId } from "../utils/toRepoId";

export async function createRepo(
	params: {
		repo: RepoDesignation;
		/**
		 * If unset, will follow the organization's default setting. (typically public, except for some Enterprise organizations)
		 */
		private?: boolean;
		license?: string;
		/**
		 * Only a few lightweight files are supported at repo creation
		 */
		files?: Array<{ content: ArrayBuffer | Blob; path: string }>;
		/** @required for when {@link repo.type} === "space" */
		sdk?: SpaceSdk;
		hubUrl?: string;
		/**
		 * Custom fetch function to use instead of the default one, for example to use a proxy or edit headers.
		 */
		fetch?: typeof fetch;
	} & CredentialsParams
): Promise<{ repoUrl: string }> {
	const accessToken = checkCredentials(params);
	const repoId = toRepoId(params.repo);
	const [namespace, repoName] = repoId.name.split("/");

	if (!namespace || !repoName) {
		throw new TypeError(
			`"${repoId.name}" is not a fully qualified repo name. It should be of the form "{namespace}/{repoName}".`
		);
	}

	const res = await (params.fetch ?? fetch)(`${params.hubUrl ?? HUB_URL}/api/repos/create`, {
		method: "POST",
		body: JSON.stringify({
			name: repoName,
			private: params.private,
			organization: namespace,
			license: params.license,
			...(repoId.type === "space"
				? {
						type: "space",
						sdk: "static",
				  }
				: {
						type: repoId.type,
				  }),
			files: params.files
				? await Promise.all(
						params.files.map(async (file) => ({
							encoding: "base64",
							path: file.path,
							content: base64FromBytes(
								new Uint8Array(file.content instanceof Blob ? await file.content.arrayBuffer() : file.content)
							),
						}))
				  )
				: undefined,
		} satisfies ApiCreateRepoPayload),
		headers: {
			Authorization: `Bearer ${accessToken}`,
			"Content-Type": "application/json",
		},
	});

	if (!res.ok) {
		throw await createApiError(res);
	}
	const output = await res.json();
	return { repoUrl: output.url };
}