feat: recurring expenses and reports

internal/db/migrations/00011_create_recurring_expenses_table.sql

@@ -0,0 +1,44 @@
+-- +goose Up
+CREATE TABLE recurring_expenses (
+    id TEXT PRIMARY KEY NOT NULL,
+    space_id TEXT NOT NULL,
+    created_by TEXT NOT NULL,
+    description TEXT NOT NULL,
+    amount_cents INTEGER NOT NULL,
+    type TEXT NOT NULL CHECK (type IN ('expense', 'topup')),
+    payment_method_id TEXT,
+    frequency TEXT NOT NULL CHECK (frequency IN ('daily', 'weekly', 'biweekly', 'monthly', 'yearly')),
+    start_date DATE NOT NULL,
+    end_date DATE,
+    next_occurrence DATE NOT NULL,
+    is_active BOOLEAN NOT NULL DEFAULT TRUE,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (space_id) REFERENCES spaces(id) ON DELETE CASCADE,
+    FOREIGN KEY (created_by) REFERENCES users(id) ON DELETE CASCADE,
+    FOREIGN KEY (payment_method_id) REFERENCES payment_methods(id) ON DELETE SET NULL
+);
+
+CREATE TABLE recurring_expense_tags (
+    recurring_expense_id TEXT NOT NULL,
+    tag_id TEXT NOT NULL,
+    PRIMARY KEY (recurring_expense_id, tag_id),
+    FOREIGN KEY (recurring_expense_id) REFERENCES recurring_expenses(id) ON DELETE CASCADE,
+    FOREIGN KEY (tag_id) REFERENCES tags(id) ON DELETE CASCADE
+);
+
+ALTER TABLE expenses ADD COLUMN recurring_expense_id TEXT REFERENCES recurring_expenses(id) ON DELETE SET NULL;
+
+CREATE INDEX idx_recurring_expenses_space_id ON recurring_expenses(space_id);
+CREATE INDEX idx_recurring_expenses_next_occurrence ON recurring_expenses(next_occurrence);
+CREATE INDEX idx_recurring_expenses_active ON recurring_expenses(is_active);
+CREATE INDEX idx_expenses_recurring_expense_id ON expenses(recurring_expense_id);
+
+-- +goose Down
+DROP INDEX IF EXISTS idx_expenses_recurring_expense_id;
+DROP INDEX IF EXISTS idx_recurring_expenses_active;
+DROP INDEX IF EXISTS idx_recurring_expenses_next_occurrence;
+DROP INDEX IF EXISTS idx_recurring_expenses_space_id;
+ALTER TABLE expenses DROP COLUMN IF EXISTS recurring_expense_id;
+DROP TABLE IF EXISTS recurring_expense_tags;
+DROP TABLE IF EXISTS recurring_expenses;