import type { Database } from "bun:sqlite";

/** A repo row as the console edits it (§24): every repo the sync found, public or not. */
export type AdminRepo = {
	name: string;
	public: number;
	category: string;
	homepage: string;
	/** Shown languages, joined by ", "; '' shows the detected one. */
	languages: string;
	issues_paused: number;
	/** Hidden paths, one per line; '' hides nothing. */
	hidden_paths: string;
	last_sync_at: number | null;
	last_sync_error: string | null;
};

export type RepoEdit = Omit<AdminRepo, "name" | "last_sync_at" | "last_sync_error">;

export function allRepos(db: Database): AdminRepo[] {
	return db.query<AdminRepo, []>("SELECT * FROM repos ORDER BY name").all();
}

export function findRepo(db: Database, name: string): AdminRepo | null {
	return db.query<AdminRepo, [string]>("SELECT * FROM repos WHERE name = ?").get(name);
}

export function updateRepo(db: Database, name: string, edit: RepoEdit): void {
	db.query(
		`UPDATE repos SET public = ?, category = ?, homepage = ?, languages = ?, issues_paused = ?,
		hidden_paths = ?
		WHERE name = ?`,
	).run(
		edit.public,
		edit.category,
		edit.homepage,
		edit.languages,
		edit.issues_paused,
		edit.hidden_paths,
		name,
	);
}

// Every kepr.db table that names a repo, and its column.
const REPO_COLUMNS = [
	["repos", "name"],
	["repo_text", "repo"],
	["release_settings", "repo"],
	["downloads", "repo"],
	["download_days", "repo"],
	["installs", "repo"],
	["issues", "repo"],
	["blocked_reporters", "repo"],
] as const;

/** Moves a renamed repo's settings, texts, issues and counts to its new name, and records it. */
export function moveRepoRows(db: Database, from: string, to: string): void {
	db.transaction(() => {
		for (const [table, column] of REPO_COLUMNS) {
			db.query(`UPDATE ${table} SET ${column} = ? WHERE ${column} = ?`).run(to, from);
		}
		db.query("DELETE FROM renamed WHERE old = ?").run(to);
		db.query("INSERT OR REPLACE INTO renamed (old, new) VALUES (?, ?)").run(from, to);
	})();
}

/** Writes site settings in one transaction; an empty value removes the key, so defaults apply. */
export function saveSettings(db: Database, values: Record<string, string>): void {
	db.transaction(() => {
		for (const [key, value] of Object.entries(values)) {
			if (value === "") db.query("DELETE FROM settings WHERE key = ?").run(key);
			else db.query("INSERT OR REPLACE INTO settings (key, value) VALUES (?, ?)").run(key, value);
		}
	})();
}