<?php

require_once(realpath(dirname(__FILE__) . "/../config.php"));

function getDb() {

    global $config, $renkan_table;

    $db = new PDO(

        $config['db']['dsn'], $config['db']['user'], $config['db']['password'],

        array(PDO::ATTR_EMULATE_PREPARES => false,

              PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION)

    );

    $querycheck = "SELECT 1 FROM ". RENKAN_PROJECT_TABLE ." LIMIT 1;";

    $create_table = false;

    try {

        $res = $db->query($querycheck);

        if($res === false) {

            $create_table = true;

        }

    }

    catch(PDOException $e) {

        $create_table = true;

    }

    if($create_table === true) {

        $db->query("CREATE TABLE ". RENKAN_PROJECT_TABLE ." ( id CHAR(36) NOT NULL PRIMARY KEY, title VARCHAR(2048) NULL, renkan TEXT NULL);");

    }

    return $db;

}

function insertProject($renkanId, $title, $renkan) {

    $insertSql = "INSERT INTO ". RENKAN_PROJECT_TABLE ." (id, title, renkan) VALUES (:renkanId, :title, :renkan)";

    $values = ['renkanId' => $renkanId, 'title' => $title, 'renkan' => $renkan];

    return execStmt($insertSql, $values);

}

function updateProject($renkanId, $title, $renkan) {

    $updateSql = "UPDATE ". RENKAN_PROJECT_TABLE ." SET id = :renkanId, title = :title, renkan = :renkan;";

    $values = ['renkanId' => $renkanId, 'title' => $title, 'renkan' => $renkan];

    return execStmt($updateSql, $values);

}

function deleteProject($renkanId) {

    $deleteSql = "DELETE FROM ". RENKAN_PROJECT_TABLE ." WHERE id = :renkanId;";

    $values = ['renkanId' => $renkanId];

    return execStmt($deleteSql, $values);

}

function selectProject($renkanId) {

    $selectSql = "SELECT id, title, renkan FROM ". RENKAN_PROJECT_TABLE ." WHERE id = :renkanId;";

    $values = ['renkanId' => $renkanId];

    return execStmt($selectSql, $values)->fetchAll(PDO::FETCH_ASSOC);

}

function listProjects() {

    $selectSql = "SELECT id, title, renkan FROM ". RENKAN_PROJECT_TABLE .";";

    return execStmt($selectSql, array())->fetchAll(PDO::FETCH_ASSOC);

}

function execStmt($sql, $values) {

    $stmt = getDb()->prepare($sql);

    $stmt->execute($values);

    return $stmt;

}