# Script de creation de la structure de la base OLA (a executer en root)
-- INSTALLER LA DERNIERE VERSION DE MARIADB
-- LANCER CE SCRIPT AVEC LA COMMANDE : mysql -u root < OLA.mysql

# Create schemas and users
CREATE DATABASE IF NOT EXISTS OLA CHARACTER SET utf8 COLLATE utf8_general_ci;


CREATE USER IF NOT EXISTS 'ola'@'localhost';
SET PASSWORD FOR 'ola'@'localhost' = PASSWORD('ola');
GRANT SELECT, INSERT, UPDATE, DELETE ON OLA.* TO 'ola'@'localhost';

USE OLA;

# Create tables
CREATE TABLE IF NOT EXISTS SETTINGS
(
    `key` VARCHAR(128) NOT NULL,
    `value` VARCHAR(256) NOT NULL,
    description VARCHAR(256),
    PRIMARY KEY(`key`)
) ENGINE = INNODB;

CREATE TABLE IF NOT EXISTS `GROUP`
(
    id BIGINT NOT NULL AUTO_INCREMENT,
    `name` VARCHAR(128) NOT NULL UNIQUE,
    `year` CHARACTER(4) NOT NULL,
    class_short VARCHAR(128) NOT NULL,
    class_long VARCHAR(512),
    department VARCHAR(256),
    resp_id BIGINT,
    ressources_dir VARCHAR(512),
    PRIMARY KEY(id)
) ENGINE = INNODB;

CREATE TABLE IF NOT EXISTS `USER`
(
    id BIGINT NOT NULL AUTO_INCREMENT,
    `login` VARCHAR(128) NOT NULL,
    `role` INT NOT NULL,
    email VARCHAR(256) NOT NULL,
    phone VARCHAR(15),
    PRIMARY KEY(id)
) ENGINE = INNODB;

CREATE TABLE IF NOT EXISTS TUTORSHIP
(
    id BIGINT NOT NULL AUTO_INCREMENT,
    group_id BIGINT NOT NULL,
    student_id BIGINT NOT NULL,
    ptutor_id BIGINT NOT NULL,
    PRIMARY KEY(id)
) ENGINE = INNODB;

CREATE TABLE IF NOT EXISTS LIVRET
(
  id              BIGINT NOT NULL AUTO_INCREMENT,
  tutorship_id    BIGINT,
  etutor_name     VARCHAR(128) NOT NULL,
  etutor_email    VARCHAR(256) NOT NULL,
  etutor_phone    VARCHAR(15) NOT NULL,
  company_name    VARCHAR(256) NOT NULL,
  company_address VARCHAR(512) NOT NULL,
  contract_type   INT NOT NULL,
  contract_start  DATE NOT NULL,
  contract_end    DATE NOT NULL,
  ressources_dir  VARCHAR(512),
  opened          TINYINT(1) NOT NULL,
  expire          DATE NOT NULL,
    PRIMARY KEY(id)
) ENGINE = INNODB;

CREATE TABLE IF NOT EXISTS PERIOD
(
    id             BIGINT NOT NULL AUTO_INCREMENT,
    livret_id      BIGINT NOT NULL,
    `type`         INT,
    `start`        DATE,
    `end`          DATE,
    student_desc   TEXT,
    etutor_desc    TEXT,
    ressources_dir VARCHAR(512),
    PRIMARY KEY (id)
) ENGINE = INNODB;

CREATE TABLE IF NOT EXISTS HASHTABLE
(
  token     VARCHAR(255) NOT NULL,
  exipre    DATE         NOT NULL,
  period_id BIGINT       NOT NULL,
    PRIMARY KEY(token)
) ENGINE = INNODB;


# Create FKs
ALTER TABLE `GROUP`
    ADD    FOREIGN KEY (resp_id)
    REFERENCES `USER`(id)
;

ALTER TABLE TUTORSHIP
    ADD    FOREIGN KEY (group_id)
    REFERENCES `GROUP`(id)
    ON DELETE CASCADE
    ON UPDATE CASCADE
;

ALTER TABLE TUTORSHIP
    ADD    FOREIGN KEY (student_id)
    REFERENCES `USER`(id)
;

ALTER TABLE TUTORSHIP
    ADD    FOREIGN KEY (ptutor_id)
    REFERENCES `USER`(id)
;

ALTER TABLE LIVRET
  ADD FOREIGN KEY (tutorship_id)
REFERENCES TUTORSHIP (id)
    ON DELETE CASCADE
    ON UPDATE CASCADE
;
    
ALTER TABLE LIVRET
  ADD FOREIGN KEY (tutorship_id)
REFERENCES TUTORSHIP (id)
    ON DELETE CASCADE
    ON UPDATE CASCADE
;

ALTER TABLE PERIOD
    ADD FOREIGN KEY (livret_id)
REFERENCES LIVRET (id)
    ON DELETE CASCADE
    ON UPDATE CASCADE;
    
ALTER TABLE HASHTABLE
  ADD FOREIGN KEY (period_id)
REFERENCES PERIOD (id)
    ON DELETE CASCADE
    ON UPDATE CASCADE
;

# Create Indexes
CREATE INDEX tutor_email ON LIVRET(etutor_email);
CREATE INDEX user_login ON `USER`(`login`);