-- Migration: 009_BankTransactions
-- Description: Create bank_transactions table for storing synced transactions from Enable Banking
-- Used by BankTransactionSyncJob (Hangfire) and displayed in Hurtig Bogføring

CREATE TABLE IF NOT EXISTS bank_transactions (
    id TEXT PRIMARY KEY,
    company_id TEXT NOT NULL,
    bank_connection_id TEXT NOT NULL,
    bank_account_id TEXT NOT NULL,
    external_id TEXT NOT NULL,  -- Transaction ID from Enable Banking (for idempotency)

    -- Amount and currency
    amount DECIMAL(18,2) NOT NULL,
    currency TEXT NOT NULL DEFAULT 'DKK',

    -- Dates
    transaction_date DATE NOT NULL,
    booking_date DATE,
    value_date DATE,

    -- Transaction details
    description TEXT,
    counterparty_name TEXT,
    counterparty_account TEXT,
    reference TEXT,
    creditor_name TEXT,
    debtor_name TEXT,

    -- Status tracking
    status TEXT NOT NULL DEFAULT 'pending',  -- pending | booked | ignored
    journal_entry_draft_id TEXT,  -- Reference to kassekladde when booked

    -- Raw data for debugging/auditing
    raw_data JSONB,

    -- Timestamps
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),

    -- Ensure no duplicate transactions per company
    UNIQUE(company_id, external_id)
);

-- Index for fetching pending transactions by company (main query)
CREATE INDEX IF NOT EXISTS idx_bank_tx_company_status
    ON bank_transactions(company_id, status);

-- Index for date-based queries
CREATE INDEX IF NOT EXISTS idx_bank_tx_company_date
    ON bank_transactions(company_id, transaction_date DESC);

-- Index for bank account filtering
CREATE INDEX IF NOT EXISTS idx_bank_tx_bank_account
    ON bank_transactions(bank_account_id, status);

-- Index for checking existing transactions during sync
CREATE INDEX IF NOT EXISTS idx_bank_tx_external_id
    ON bank_transactions(company_id, external_id);

COMMENT ON TABLE bank_transactions IS 'Bank transactions synced from Enable Banking API via Hangfire job';
COMMENT ON COLUMN bank_transactions.external_id IS 'Unique transaction ID from Enable Banking, used for deduplication';
COMMENT ON COLUMN bank_transactions.status IS 'pending = not yet booked, booked = linked to journal entry, ignored = manually skipped';
COMMENT ON COLUMN bank_transactions.journal_entry_draft_id IS 'Reference to journal_entry_draft_read_models.aggregate_id when booked';