import Database from 'tauri-plugin-sql-api';

let db: null | Database = null;

// connect database (sqlite)
// path: tauri::api::path::BaseDirectory::App
export async function connect(): Promise<Database> {
  if (db) {
    return db;
  }
  db = await Database.load('sqlite:lume.db');
  return db;
}

// get active account
export async function getActiveAccount() {
  const db = await connect();
  // #TODO: check is_active == true
  const result = await db.select(`SELECT * FROM accounts WHERE is_active = 1 LIMIT 1;`);
  return result[0];
}

// get all accounts
export async function getAccounts() {
  const db = await connect();
  return await db.select(`SELECT * FROM accounts ORDER BY created_at DESC;`);
}

// create account
export async function createAccount(
  pubkey: string,
  privkey: string,
  metadata: string,
  follows?: string[][],
  is_active?: number
) {
  const db = await connect();
  return await db.execute(
    'INSERT OR IGNORE INTO accounts (pubkey, privkey, metadata, follows, is_active) VALUES (?, ?, ?, ?, ?);',
    [pubkey, privkey, metadata, follows || '', is_active || 0]
  );
}

// update account
export async function updateAccount(column: string, value: string | string[], pubkey: string) {
  const db = await connect();
  return await db.execute(`UPDATE accounts SET ${column} = ? WHERE pubkey = ?;`, [value, pubkey]);
}

// get all plebs
export async function getPlebs() {
  const db = await connect();
  return await db.select(`SELECT * FROM plebs ORDER BY created_at DESC;`);
}

// get pleb by pubkey
export async function getPleb(pubkey: string) {
  const db = await connect();
  const result = await db.select(`SELECT * FROM plebs WHERE pubkey = "${pubkey}"`);
  return result[0];
}

// create pleb
export async function createPleb(pubkey: string, metadata: string) {
  const db = await connect();
  return await db.execute('INSERT OR IGNORE INTO plebs (pubkey, metadata) VALUES (?, ?);', [pubkey, metadata]);
}

// count total notes
export async function countTotalChannels() {
  const db = await connect();
  const result = await db.select('SELECT COUNT(*) AS "total" FROM channels;');
  return result[0];
}

// count total notes
export async function countTotalNotes() {
  const db = await connect();
  const result = await db.select('SELECT COUNT(*) AS "total" FROM notes;');
  return result[0];
}

// get all notes
export async function getNotes(time: number, limit: number, offset: number) {
  const db = await connect();

  const notes: any = { data: null, nextCursor: 0 };
  const query: any = await db.select(
    `SELECT * FROM notes WHERE created_at <= "${time}" GROUP BY parent_id ORDER BY created_at DESC LIMIT "${limit}" OFFSET "${offset}";`
  );

  notes['data'] = query;
  notes['nextCursor'] = offset + limit;

  return notes;
}

// get note by id
export async function getNoteByID(event_id: string) {
  const db = await connect();
  const result = await db.select(`SELECT * FROM notes WHERE event_id = "${event_id}";`);
  return result[0];
}

// get all latest notes
export async function getLatestNotes(time: number) {
  const db = await connect();
  return await db.select(
    `SELECT * FROM notes WHERE created_at > "${time}" GROUP BY parent_id ORDER BY created_at DESC;`
  );
}

// create note
export async function createNote(
  event_id: string,
  account_id: number,
  pubkey: string,
  kind: number,
  tags: string[],
  content: string,
  created_at: number,
  parent_id: string
) {
  const db = await connect();
  return await db.execute(
    'INSERT OR IGNORE INTO notes (event_id, account_id, pubkey, kind, tags, content, created_at, parent_id) VALUES (?, ?, ?, ?, ?, ?, ?, ?);',
    [event_id, account_id, pubkey, kind, tags, content, created_at, parent_id]
  );
}

// get all channels
export async function getChannels(limit: number, offset: number) {
  const db = await connect();
  return await db.select(`SELECT * FROM channels ORDER BY created_at DESC LIMIT "${limit}" OFFSET "${offset}";`);
}

// get channel by id
export async function getChannel(id: string) {
  const db = await connect();
  const result = await db.select(`SELECT * FROM channels WHERE event_id = "${id}";`);
  return result[0];
}

// create channel
export async function createChannel(event_id: string, pubkey: string, metadata: string, created_at: number) {
  const db = await connect();
  return await db.execute(
    'INSERT OR IGNORE INTO channels (event_id, pubkey, metadata, created_at) VALUES (?, ?, ?, ?);',
    [event_id, pubkey, metadata, created_at]
  );
}

// update channel metadata
export async function updateChannelMetadata(event_id: string, value: string) {
  const db = await connect();
  return await db.execute('UPDATE channels SET metadata = ? WHERE event_id = ?;', [value, event_id]);
}

// get all chats
export async function getChats(account_id: number) {
  const db = await connect();
  return await db.select(`SELECT * FROM chats WHERE account_id <= "${account_id}" ORDER BY created_at DESC;`);
}

// create chat
export async function createChat(account_id: number, pubkey: string, created_at: number) {
  const db = await connect();
  return await db.execute('INSERT OR IGNORE INTO chats (account_id, pubkey, created_at) VALUES (?, ?, ?);', [
    account_id,
    pubkey,
    created_at,
  ]);
}

// get last login
export async function getLastLogin() {
  const db = await connect();
  const result = await db.select(`SELECT value FROM settings WHERE key = "last_login";`);
  return result[0]?.value;
}

// update last login
export async function updateLastLogin(value: number) {
  const db = await connect();
  return await db.execute(`UPDATE settings SET value = ${value} WHERE key = "last_login";`);
}

// get blacklist by kind and account id
export async function getBlacklist(account_id: number, kind: number) {
  const db = await connect();
  return await db.select(`SELECT * FROM blacklist WHERE account_id = "${account_id}" AND kind = "${kind}";`);
}

// get active blacklist by kind and account id
export async function getActiveBlacklist(account_id: number, kind: number) {
  const db = await connect();
  return await db.select(
    `SELECT content FROM blacklist WHERE account_id = "${account_id}" AND kind = "${kind}" AND status = 1;`
  );
}

// add to blacklist
export async function addToBlacklist(account_id: number, content: string, kind: number, status?: number) {
  const db = await connect();
  return await db.execute('INSERT OR IGNORE INTO blacklist (account_id, content, kind, status) VALUES (?, ?, ?, ?);', [
    account_id,
    content,
    kind,
    status || 1,
  ]);
}

// update item in blacklist
export async function updateItemInBlacklist(content: string, status: number) {
  const db = await connect();
  return await db.execute(`UPDATE blacklist SET status = "${status}" WHERE content = "${content}";`);
}