CREATE TABLE import_batches (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          imported_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
          source_path TEXT NOT NULL,
          source_sha256 TEXT,
          row_count INTEGER NOT NULL,
          notes TEXT
        );
CREATE TABLE sqlite_sequence(name,seq);
CREATE TABLE transactions (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          transaction_id TEXT NOT NULL UNIQUE,
          status TEXT NOT NULL,
          asset_class TEXT,
          instrument_type TEXT,
          market TEXT,
          ticker TEXT,
          name TEXT,
          side TEXT,
          order_type TEXT,
          trade_datetime TEXT,
          timezone TEXT,
          trade_date TEXT,
          financial_year TEXT,
          settlement_date TEXT,
          quantity TEXT,
          price_currency TEXT,
          price TEXT,
          gross_currency TEXT,
          gross_amount TEXT,
          brokerage_currency TEXT,
          brokerage_and_gst TEXT,
          total_currency TEXT,
          total_cash_amount TEXT,
          total_cash_amount_aud TEXT,
          fx_rate_to_aud TEXT,
          broker TEXT,
          account TEXT,
          source_document TEXT,
          notes TEXT,
          import_batch_id INTEGER REFERENCES import_batches(id),
          created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
          updated_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
        );
CREATE TABLE trade_lots (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          transaction_id TEXT NOT NULL REFERENCES transactions(transaction_id) ON DELETE CASCADE,
          lot_id TEXT NOT NULL UNIQUE,
          asset_class TEXT,
          ticker TEXT,
          name TEXT,
          acquisition_date TEXT,
          quantity_acquired TEXT,
          quantity_remaining TEXT,
          native_currency TEXT,
          native_cost_base TEXT,
          aud_cost_base TEXT,
          broker TEXT,
          account TEXT,
          notes TEXT
        );
CREATE TABLE cash_movements (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          movement_id TEXT NOT NULL UNIQUE,
          movement_date TEXT,
          financial_year TEXT,
          movement_type TEXT,
          platform TEXT,
          account TEXT,
          currency TEXT,
          amount TEXT,
          amount_aud TEXT,
          related_transaction_id TEXT REFERENCES transactions(transaction_id),
          source_document TEXT,
          notes TEXT
        );
CREATE TABLE fx_rates (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          fx_id TEXT NOT NULL UNIQUE,
          rate_date TEXT,
          from_currency TEXT NOT NULL,
          to_currency TEXT NOT NULL,
          rate TEXT NOT NULL,
          source TEXT,
          source_document TEXT,
          notes TEXT
        );
CREATE TABLE source_documents (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          path TEXT NOT NULL UNIQUE,
          doc_type TEXT,
          sha256 TEXT NOT NULL,
          size_bytes INTEGER NOT NULL,
          captured_date TEXT,
          description TEXT,
          ocr_text TEXT,
          notes TEXT,
          created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
        );
CREATE TABLE transaction_documents (
          transaction_id TEXT NOT NULL REFERENCES transactions(transaction_id) ON DELETE CASCADE,
          source_document_id INTEGER NOT NULL REFERENCES source_documents(id) ON DELETE CASCADE,
          relationship TEXT NOT NULL DEFAULT 'evidence',
          PRIMARY KEY (transaction_id, source_document_id, relationship)
        );
CREATE TABLE decisions (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          decision_date TEXT NOT NULL,
          topic TEXT NOT NULL,
          decision TEXT NOT NULL,
          source TEXT,
          notes TEXT
        );
CREATE TABLE audit_log (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          event_time TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
          event_type TEXT NOT NULL,
          entity_type TEXT,
          entity_id TEXT,
          details TEXT
        );
CREATE INDEX idx_transactions_ticker ON transactions(ticker);
CREATE INDEX idx_transactions_trade_date ON transactions(trade_date);
CREATE INDEX idx_transactions_financial_year ON transactions(financial_year);
CREATE INDEX idx_transactions_broker ON transactions(broker);
CREATE INDEX idx_lots_ticker ON trade_lots(ticker);
CREATE INDEX idx_docs_sha ON source_documents(sha256);
CREATE VIEW v_transactions_aud AS
        SELECT transaction_id, status, financial_year, trade_date, trade_datetime, timezone,
               asset_class, instrument_type, market, ticker, name, side, quantity,
               price_currency, price, total_currency, total_cash_amount,
               total_cash_amount_aud, fx_rate_to_aud, brokerage_and_gst,
               broker, account, source_document, notes
        FROM transactions
/* v_transactions_aud(transaction_id,status,financial_year,trade_date,trade_datetime,timezone,asset_class,instrument_type,market,ticker,name,side,quantity,price_currency,price,total_currency,total_cash_amount,total_cash_amount_aud,fx_rate_to_aud,brokerage_and_gst,broker,account,source_document,notes) */;
CREATE VIEW v_holdings AS
        SELECT ticker, name, asset_class, instrument_type, market, broker, account,
               SUM(CASE WHEN lower(side)='buy' THEN CAST(quantity AS REAL)
                        WHEN lower(side)='sell' THEN -CAST(quantity AS REAL)
                        ELSE 0 END) AS quantity,
               SUM(CASE WHEN lower(side)='buy' THEN
                            CASE WHEN total_cash_amount_aud IS NOT NULL THEN CAST(total_cash_amount_aud AS REAL)
                                 WHEN total_currency='AUD' THEN CAST(total_cash_amount AS REAL)
                                 ELSE NULL END
                        WHEN lower(side)='sell' THEN
                            CASE WHEN total_cash_amount_aud IS NOT NULL THEN -CAST(total_cash_amount_aud AS REAL)
                                 WHEN total_currency='AUD' THEN -CAST(total_cash_amount AS REAL)
                                 ELSE NULL END
                        ELSE 0 END) AS aud_cost_base
        FROM transactions
        WHERE status='executed' AND ticker IS NOT NULL
        GROUP BY ticker, name, asset_class, instrument_type, market, broker, account
/* v_holdings(ticker,name,asset_class,instrument_type,market,broker,account,quantity,aud_cost_base) */;
CREATE VIEW v_financial_year_summary AS
        SELECT financial_year, asset_class, total_currency,
               COUNT(*) AS transaction_count,
               SUM(CAST(total_cash_amount AS REAL)) AS native_total,
               CASE WHEN SUM(CASE WHEN total_currency!='AUD' AND total_cash_amount_aud IS NULL THEN 1 ELSE 0 END) > 0
                    THEN NULL
                    ELSE SUM(CASE WHEN total_cash_amount_aud IS NOT NULL THEN CAST(total_cash_amount_aud AS REAL)
                                  WHEN total_currency='AUD' THEN CAST(total_cash_amount AS REAL)
                                  ELSE NULL END)
               END AS aud_total
        FROM transactions
        GROUP BY financial_year, asset_class, total_currency
/* v_financial_year_summary(financial_year,asset_class,total_currency,transaction_count,native_total,aud_total) */;