-- 1. Eliminar tablas antiguas (El respaldo ya está hecho)
DROP TABLE IF EXISTS surveys_answers;
DROP TABLE IF EXISTS surveys_questions;
DROP TABLE IF EXISTS surveys;

-- 2. Crear tabla de configuracion de encuestas 
CREATE TABLE surveys_questions (
  id INT UNSIGNED NOT NULL AUTO_INCREMENT,
  question VARCHAR(255) DEFAULT NULL,
  levels INT DEFAULT 5,
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_general_ci;

-- 3. Crear tabla de respuestas Historicas
CREATE TABLE surveys_answers (
  id INT UNSIGNED NOT NULL AUTO_INCREMENT,
  context_id INT DEFAULT NULL,
  id_user INT DEFAULT NULL,
  rh_name VARCHAR(255) DEFAULT NULL,
  snapshot_json JSON DEFAULT NULL,
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_general_ci;

-- 4. Reemplazar Stored Procedure: sp_upsert_survey
DELIMITER $$
DROP PROCEDURE IF EXISTS sp_upsert_survey$$
CREATE PROCEDURE sp_upsert_survey(
    IN p_id INT,
    IN p_surveyType VARCHAR(255),
    IN p_title VARCHAR(255),
    IN p_checkboxes TEXT,
    IN p_openQuestions TEXT,
    IN p_ranges JSON
)
BEGIN
    -- Limpiamos las preguntas actuales de forma definitiva
    TRUNCATE TABLE surveys_questions;
    
    -- Insertamos las nuevas preguntas iterando sobre el JSON p_ranges
    -- El JSON tiene la forma: [{"question": "Pregunta 1", "levels": 5}, ...]
    IF p_ranges IS NOT NULL THEN
        INSERT INTO surveys_questions (question, levels)
        SELECT 
            JSON_UNQUOTE(JSON_EXTRACT(value, '$.question')),
            JSON_UNQUOTE(JSON_EXTRACT(value, '$.levels'))
        FROM JSON_TABLE(p_ranges, '$[*]' COLUMNS (value JSON PATH '$')) AS jt;
    END IF;
    
    SELECT 1 AS success, 'Encuesta actualizada correctamente' AS message;
END$$
DELIMITER ;

-- 5. Reemplazar Stored Procedure: sp_get_all_surveys
DELIMITER $$
DROP PROCEDURE IF EXISTS sp_get_all_surveys$$
CREATE PROCEDURE sp_get_all_surveys()
BEGIN
    -- Forzamos la estructura que Vue espera en el frontend:
    -- [{ id: 1, docType: 'SERVICE_ORDER', name: 'Encuesta', questions: '[...]' }]
    -- En este caso los IDs no importan, agrupamos todo en un único objeto "Virtual".
    
    SELECT 
        1 AS id,
        'Encuesta de Satisfacción' AS title,
        'SERVICE_ORDER' AS surveyType,
        IFNULL(
            (
                SELECT JSON_ARRAYAGG(
                    JSON_OBJECT(
                        'id', id,
                        'typeQuestion', 'ranges',
                        'question', question,
                        'levels', levels
                    )
                )
                FROM surveys_questions
            ), 
            '[]'
        ) AS questions;
END$$
DELIMITER ;

-- 6. Reemplazar Stored Procedure: sp_save_survey_answers
DELIMITER $$
DROP PROCEDURE IF EXISTS sp_save_survey_answers$$
CREATE PROCEDURE sp_save_survey_answers(
    IN p_surveyId INT,
    IN p_rhName VARCHAR(255),
    IN p_answers_json JSON
)
BEGIN
    -- P_answers_json debe contener la "fotografia" cruda enviada desde frontend
    INSERT INTO surveys_answers (context_id, rh_name, snapshot_json)
    VALUES (p_surveyId, p_rhName, p_answers_json);
    
    SELECT 1 AS success;
END$$
DELIMITER ;