import { sequelize } from '../utils/sequelize.js';

export async function createTriggers() {
    const createTriggerFunction = `
        CREATE OR REPLACE FUNCTION create_user_param_visibility_trigger()
        RETURNS TRIGGER AS $$
        BEGIN
            -- Check if UserParamVisibility already exists for this UserParam
            IF NOT EXISTS (
                SELECT 1 FROM community.user_param_visibility
                WHERE param_id = NEW.id
            ) THEN
                -- Insert the default visibility (Invisible)
                INSERT INTO community.user_param_visibility (param_id, visibility)
                VALUES (NEW.id, (
                    SELECT id FROM type.user_param_visibility WHERE description = 'Invisible'
                ));
            END IF;
            RETURN NEW;
        END;
        $$ LANGUAGE plpgsql;
    `;

    const createInsertTrigger = `
        CREATE OR REPLACE TRIGGER trigger_create_user_param_visibility
        AFTER INSERT ON community.user_param
        FOR EACH ROW
        EXECUTE FUNCTION create_user_param_visibility_trigger();
    `;

    const createUpdateTrigger = `
        CREATE OR REPLACE TRIGGER trigger_update_user_param_visibility
        AFTER UPDATE ON community.user_param
        FOR EACH ROW
        EXECUTE FUNCTION create_user_param_visibility_trigger();
    `;

    const createDiaryHistoryTriggerFunction = `
        CREATE OR REPLACE FUNCTION insert_diary_history()
        RETURNS TRIGGER AS $$
        BEGIN
            INSERT INTO community.diary_history (diaryId, userId, oldText, oldCreatedAt, oldUpdatedAt)
            VALUES (OLD.id, OLD.userId, OLD.text, OLD.createdAt, OLD.updatedAt);
            RETURN NEW;
        END;
        $$ LANGUAGE plpgsql;
    `;

    const createDiaryHistoryTrigger = `
        CREATE OR REPLACE TRIGGER diary_update_trigger
        BEFORE UPDATE ON community.diary
        FOR EACH ROW
        EXECUTE FUNCTION insert_diary_history();
    `;

    try {
        await sequelize.query(createTriggerFunction);
        await sequelize.query(createInsertTrigger);
        await sequelize.query(createUpdateTrigger);
        await sequelize.query(createDiaryHistoryTriggerFunction);
        await sequelize.query(createDiaryHistoryTrigger);

        console.log('Triggers created successfully');
    } catch (error) {
        console.error('Error creating triggers:', error);
    }
}