/**
 * SQL Query Constants
 *
 * All SQL queries used in the application.
 * Repositories reference these by name (e.g., MARKET_CALLS_QUERIES.SELECT_ALL).
 * QueryBuilder looks them up and binds parameters.
 *
 * All queries use parameterized statements (?) for security.
 * User input NEVER goes into the SQL string.
 */

// ── Holdings Table Queries ───────────────────────────────────────────────────

export const HOLDINGS_QUERIES = {
  // Check if any holdings exist
  EXISTS: 'SELECT COUNT(*) AS n FROM holdings',

  // Get all holdings, sorted by ticker
  SELECT_ALL: 'SELECT ticker, shares, cost_basis, type, source FROM holdings ORDER BY ticker ASC',

  // Insert or update a holding (UPSERT)
  UPSERT: `
    INSERT INTO holdings (ticker, shares, cost_basis, type, source)
    VALUES (?, ?, ?, ?, ?)
    ON CONFLICT(ticker) DO UPDATE SET
      shares     = excluded.shares,
      cost_basis = excluded.cost_basis,
      type       = excluded.type,
      source     = excluded.source
  `,

  // Delete a holding by ticker
  DELETE_BY_TICKER: 'DELETE FROM holdings WHERE ticker = ?',
};

// ── Market Calls Table Queries ───────────────────────────────────────────────

export const MARKET_CALLS_QUERIES = {
  // Get all market calls, newest first
  SELECT_ALL: `
    SELECT id, title, quarter, date, thesis, tickers, snapshot, created_at
    FROM market_calls
    ORDER BY created_at DESC
  `,

  // Get a single market call by ID
  SELECT_BY_ID: `
    SELECT id, title, quarter, date, thesis, tickers, snapshot, created_at
    FROM market_calls
    WHERE id = ?
  `,

  // Insert a new market call
  INSERT: `
    INSERT INTO market_calls (id, title, quarter, date, thesis, tickers, snapshot, created_at)
    VALUES (?, ?, ?, ?, ?, ?, ?, ?)
  `,

  // Delete a market call by ID
  DELETE_BY_ID: 'DELETE FROM market_calls WHERE id = ?',
};

// ── Migration Queries (for DatabaseInitializer) ──────────────────────────────

export const MIGRATION_QUERIES = {
  // Insert holdings during migration
  HOLDINGS_INSERT_OR_IGNORE: `
    INSERT OR IGNORE INTO holdings (ticker, shares, cost_basis, type, source)
    VALUES (?, ?, ?, ?, ?)
  `,

  // Insert market calls during migration
  MARKET_CALLS_INSERT_OR_IGNORE: `
    INSERT OR IGNORE INTO market_calls (id, title, quarter, date, thesis, tickers, snapshot, created_at)
    VALUES (?, ?, ?, ?, ?, ?, ?, ?)
  `,
};

// ── Schema Definition (DDL) ──────────────────────────────────────────────────

export const DDL = `
  CREATE TABLE IF NOT EXISTS holdings (
    ticker     TEXT PRIMARY KEY,
    shares     REAL    NOT NULL,
    cost_basis REAL    NOT NULL DEFAULT 0,
    type       TEXT    NOT NULL DEFAULT 'stock',
    source     TEXT    NOT NULL DEFAULT 'Manual'
  );

  CREATE TABLE IF NOT EXISTS market_calls (
    id         TEXT PRIMARY KEY,
    title      TEXT NOT NULL,
    quarter    TEXT NOT NULL,
    date       TEXT NOT NULL,
    thesis     TEXT NOT NULL,
    tickers    TEXT NOT NULL,   -- JSON array
    snapshot   TEXT NOT NULL,   -- JSON object
    created_at TEXT NOT NULL
  );
`;