initial commit

migrations/00007_create_ratings_table.sql

@@ -0,0 +1,43 @@
+-- +goose Up
+-- +goose StatementBegin
+
+-- =========================================
+-- ТАБЛИЦА: ratings - Рейтинги волонтёров
+-- =========================================
+CREATE TABLE ratings (
+    id BIGSERIAL PRIMARY KEY,
+
+    -- Связи
+    volunteer_response_id BIGINT NOT NULL UNIQUE REFERENCES volunteer_responses(id),
+    volunteer_id BIGINT NOT NULL REFERENCES users(id),
+    requester_id BIGINT NOT NULL REFERENCES users(id),
+    request_id BIGINT NOT NULL REFERENCES requests(id),
+
+    -- Оценка
+    rating INTEGER NOT NULL CHECK (rating >= 1 AND rating <= 5),
+    comment TEXT,
+
+    -- Аудит
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Комментарии
+COMMENT ON TABLE ratings IS 'Рейтинги волонтёров за выполненную помощь';
+COMMENT ON COLUMN ratings.rating IS 'Оценка от 1 до 5 звёзд';
+COMMENT ON COLUMN ratings.volunteer_response_id IS 'Связь с откликом (один рейтинг на один отклик)';
+COMMENT ON COLUMN ratings.volunteer_id IS 'Денормализация для быстрого доступа';
+COMMENT ON COLUMN ratings.requester_id IS 'Кто оставил рейтинг';
+
+-- Индексы
+CREATE INDEX idx_ratings_volunteer_id ON ratings(volunteer_id);
+CREATE INDEX idx_ratings_request_id ON ratings(request_id);
+CREATE INDEX idx_ratings_requester_id ON ratings(requester_id);
+CREATE INDEX idx_ratings_created_at ON ratings(created_at DESC);
+
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+DROP TABLE IF EXISTS ratings CASCADE;
+-- +goose StatementEnd