<?php
declare(strict_types=1);
namespace JKingWeb\NewsSync\Db;

class StatementSQLite3 implements Statement {
    protected $db;
    protected $st;
    protected $types;

    public function __construct($db, $st, array $bindings = null) {
        $this->db = $db;
        $this->st = $st;
        $this->types = [];
        foreach($bindings as $binding) {
            switch(trim(strtolower($binding))) {
                case "int":
                case "integer":
                    $this->types[] = \SQLITE3_INTEGER; break;
                case "float":
                case "double":
                case "real":
                case "numeric":
                    $this->types[] = \SQLITE3_FLOAT; break;
                case "date":
                case "time":
                case "datetime":
                case "timestamp":
                    $this->types[] = \SQLITE3_TEXT; break;
                case "blob":
                case "bin":
                case "binary":
                    $this->types[] = \SQLITE3_BLOB; break;
                case "text":
                case "string":
                case "str":
                    $this->types[] = \SQLITE3_TEXT; break;
                case "bool":
                case "boolean":
                case "bit":
                    $this->types[] = \SQLITE3_INTEGER; break;
                default:
                    $this->types[] = \SQLITE3_TEXT; break;
            }
        }
    }

    public function __destruct() {
        $this->st->close();
        unset($this->st);
    }

    public function __invoke(&...$values) {
        return $this->runArray($values);
    }

    public function run(&...$values): Result {
        return $this->runArray($values);
    }

    public function runArray(array &$values = null): Result {
        $this->st->clear();
        $l = sizeof($values);
        for($a = 0; $a < $l; $a++) {
            if($values[$a]===null) {
                $type = \SQLITE3_NULL;
            } else {
                $type = (array_key_exists($a,$this->types)) ? $this->types[$a] : \SQLITE3_TEXT;
            }
            $this->st->bindParam($a+1, $values[$a], $type);
        }
        return new ResultSQLite3($this->st->execute(), $this->db->changes(), $this);
    }
}