<?php

namespace app\core;

//use app\core\Database;
use app\core\Connection;
use PDO;
use Exception;
use PDOException;
use stdClass;
use app\shared\Logger;

abstract class Repository
{
    public DataBase $db;
    //protected static string $table;
    protected static Logger $logger;

    private static function setLog()
    {
        self::$logger = new Logger('api' . date('Ymd'), true);
    }

    /**
     * Binds the values to the query, executed and returns the information selected in @param string $fetch.
     */
    public static function query(string $query, array $params = [], string $fetch = 'all'): array|int|bool
    {
        try {
            self::setLog();
            self::$logger->debug("Getting connection", true);
            $stmt = Connection::getInstance()->prepare($query);
            foreach ($params as $key => $value) {
                // menaging LIKE statement in query
                if (strpos($query, 'SELECT') !== FALSE && in_array($key, ['src', 'dst', 'entrada', 'fila', 'evento', 'nome'])) {
                    $value = "%$value%";
                    self::$logger->debug("treating value $key", true);
                }
                $stmt->bindValue(":$key", $value, (is_int($value) ? PDO::PARAM_INT : PDO::PARAM_STR));
            }
            self::$logger->debug("Biding values for $query\nwith params: " . print_r($params, true), true);
            $stmt->execute();

            //selects the type of return
            switch ($fetch) {
                case 'all':
                    return $stmt->fetchAll();
                case 'one':
                    return $stmt->fetch(PDO::FETCH_ASSOC);
                case 'count':
                    return $stmt->rowCount();
                default:
                    return $stmt->fetchAll();
            }
        } catch (PDOException $e) {
            self::$logger->error(print_r(['error' => $e->getMessage(), 'query' => $query, 'params' => $params], true));
            return ['status' => false, 'data' => ['message' => 'Nenhum resultado encontrado!']];
        } catch (Exception $general) {
            self::$logger->error(print_r(['error' => $general->getMessage(), 'query' => $query, 'params' => $params], true));
            return ['status' => false, 'data' => ['message' => 'Nenhum resultado encontrado!']];
        }
    }

    /** Dinamicaly creates a SELECT query based on passed parameters
     * @param string $table: table name
     * @param array $columns: list of columns to be returned
     * @param array $params: list of parameters to be used in 'WHERE' statement
     * @param string fetch: type of return desired
     */
    public static function dinamicSelectQuery(string $table, array $columns, array $params, string $fetch): array|int|bool
    {
        self::setLog();
        $query =    "SELECT " . implode(', ', $columns) . ' FROM ' . $table . " WHERE 1 = 1 ";

        foreach ($params as $key => $value) {
            if (empty($value)) {
                continue;
            }

            if (in_array($key, ['src', 'dst', 'entrada', 'fila', 'evento', 'nome'])) {
                $query .= " AND $key LIKE :$key";
                continue;
            }
            $query .= " AND $key = :$key";
        }

        return self::query($query, $params, $fetch);
    }

    /** Dinamicaly inserts a record into a table
     * @param string $table: table name
     * @param array $columns: associative array containing the fields and its values to be recorded
     * @return int|bool the number of rows modified by the database operation
     */
    public static function dinamicInsertQuery(string $table, array $columns): int|bool
    {
        $query = "INSERT INTO $table (";
        $notFirst = false;
        foreach ($columns as $key => $value) {
            if ($notFirst) {
                $query .= ', ';
            }
            $notFirst = true;
            $query .= $key;
        }

        $query .= ') VALUES (';
        $notFirst = false;
        foreach ($columns as $key => $value) {
            if ($notFirst) {
                $query .= ', ';
            }
            $notFirst = true;
            $query .= ":$key";
        }
        $query .= ')';

        return self::query($query, $columns, "count");
    }

    public static function dinamicDeleteQuery(string $table, array $params): int|bool
    {
        if (!sizeof($params)) {
            throw new Exception("Delete statement must have parameters!");
        }

        $query = "DELETE FROM $table WHERE 1 = 1 ";
        foreach ($params as $key => $value) {
            if (empty($value)) {
                continue;
            }
            $query .= " AND $key = :$key";
        }

        return self::query($query, $params, 'count');
    }
}