feat: payment methods

internal/db/migrations/00010_create_payment_methods_table.sql

@@ -0,0 +1,23 @@
+-- +goose Up
+CREATE TABLE payment_methods (
+    id TEXT PRIMARY KEY NOT NULL,
+    space_id TEXT NOT NULL,
+    name TEXT NOT NULL,
+    type TEXT NOT NULL CHECK (type IN ('credit', 'debit')),
+    last_four TEXT NOT NULL,
+    created_by TEXT NOT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE(space_id, name),
+    FOREIGN KEY (space_id) REFERENCES spaces(id) ON DELETE CASCADE,
+    FOREIGN KEY (created_by) REFERENCES users(id) ON DELETE CASCADE
+);
+ALTER TABLE expenses ADD COLUMN payment_method_id TEXT REFERENCES payment_methods(id) ON DELETE SET NULL;
+CREATE INDEX idx_payment_method_space_id ON payment_methods(space_id);
+CREATE INDEX idx_expenses_payment_method_id ON expenses(payment_method_id);
+
+-- +goose Down
+DROP INDEX IF EXISTS idx_expenses_payment_method_id;
+DROP INDEX IF EXISTS idx_payment_method_space_id;
+ALTER TABLE expenses DROP COLUMN IF EXISTS payment_method_id;
+DROP TABLE IF EXISTS payment_methods;