/**
 * File / content operations
 */

import type { GiteaClient } from "./client.js";

export interface FileContent {
	name: string;
	path: string;
	sha: string;
	content: string;
	encoding: string;
	size: number;
	html_url: string;
}

export interface FileCommitResponse {
	content: FileContent;
	commit: { sha: string; html_url: string };
}

export interface Branch {
	name: string;
	commit: { id: string; message: string };
}

/** Get file content from a repo */
export async function getFileContent(
	client: GiteaClient,
	owner: string,
	repo: string,
	filepath: string,
	opts: { ref?: string } = {},
): Promise<FileContent> {
	const ref = opts.ref ? `?ref=${encodeURIComponent(opts.ref)}` : "";
	return client.get<FileContent>(`/repos/${owner}/${repo}/contents/${filepath}${ref}`);
}

/** Create or update a file in a repo */
export async function updateFile(
	client: GiteaClient,
	owner: string,
	repo: string,
	filepath: string,
	opts: { content: string; message: string; branch?: string; sha?: string },
): Promise<FileCommitResponse> {
	return client.put<FileCommitResponse>(`/repos/${owner}/${repo}/contents/${filepath}`, {
		content: Buffer.from(opts.content).toString("base64"),
		message: opts.message,
		branch: opts.branch,
		sha: opts.sha,
	});
}

/** Delete a file in a repo */
export async function deleteFile(
	client: GiteaClient,
	owner: string,
	repo: string,
	filepath: string,
	opts: { sha: string; message: string; branch?: string },
): Promise<void> {
	// Gitea's delete file endpoint uses DELETE with a body
	await client.request("DELETE", `/repos/${owner}/${repo}/contents/${filepath}`, {
		sha: opts.sha,
		message: opts.message,
		branch: opts.branch,
	});
}

/** Create a branch */
export async function createBranch(
	client: GiteaClient,
	owner: string,
	repo: string,
	opts: { name: string; oldRef?: string },
): Promise<Branch> {
	return client.post<Branch>(`/repos/${owner}/${repo}/branches`, {
		new_branch_name: opts.name,
		old_branch_name: opts.oldRef ?? "main",
	});
}

/** List branches */
export async function listBranches(
	client: GiteaClient,
	owner: string,
	repo: string,
): Promise<Branch[]> {
	return client.get<Branch[]>(`/repos/${owner}/${repo}/branches`);
}