<?php
/** @license MIT
 * Copyright 2017 J. King, Dustin Wilson et al.
 * See LICENSE and AUTHORS files for details */

declare(strict_types=1);
namespace JKingWeb\Arsse\TestCase\Db;

use JKingWeb\Arsse\Arsse;
use JKingWeb\Arsse\Db\Result;
use JKingWeb\Arsse\Db\PDOResult;
use JKingWeb\Arsse\Db\SQLite3\PDODriver;

/** 
 * @covers \JKingWeb\Arsse\Db\PDOResult<extended> 
 * @covers \JKingWeb\Arsse\Db\SQLite3\Result<extended>
 */
class TestResult extends \JKingWeb\Arsse\Test\AbstractTest {
    public function provideResults() {
        $this->setConf();
        $interfaces = $this->provideDbInterfaces();
        $constructors = [
            'SQLite 3' => function(string $query) use($interfaces) {
                $drv = $interfaces['SQLite 3']['interface'];
                $set = $drv->query($query);
                $rows = $drv->changes();
                $id = $drv->lastInsertRowID();
                return [$set, [$rows, $id]];
            },
        ];
        foreach ($constructors as $drv => $func) {
            yield $drv => [isset($interfaces[$drv]['interface']), $interfaces[$drv]['stringOutput'], $interfaces[$drv]['result'], $func];
        }
        // there is only one PDO result implementation, so we test the first implementation we find
        $pdo = array_reduce($interfaces, function ($carry, $item) {
            return $carry ?? ($item['interface'] instanceof \PDO ? $item : null);
        }) ?? $interfaces['PDO SQLite 3'];
        yield "PDO" => [isset($pdo['interface']), $pdo['stringOutput'], $pdo['result'], function(string $query) use($pdo) {
            $drv = $pdo['interface'];
            $set = $drv->query($query);
            $rows = $set->rowCount();
            $id = $drv->lastInsertID();
            return [$set, [$rows, $id]];
        }]; 
    }

    /** @dataProvider provideResults */
    public function testConstructResult(bool $driverTestable, bool $stringCoersion, string $class, \Closure $func) {
        if (!$driverTestable) {
            $this->markTestSkipped();
        }
        $this->assertInstanceOf(Result::class, new $class(...$func("SELECT 1")));
    }

    /** @dataProvider provideResults */
    public function testGetChangeCountAndLastInsertId(bool $driverTestable, bool $stringCoersion, string $class, \Closure $func) {
        if (!$driverTestable) {
            $this->markTestSkipped();
        }
        $func("CREATE TABLE if not exists arsse_meta(key varchar(255) primary key not null, value text)");
        $out = $func("INSERT INTO arsse_meta(key,value) values('test', 1)");
        $rows = $out[1][0];
        $id = $out[1][1];
        $r = new $class(...$out);
        $this->assertSame((int) $rows, $r->changes());
        $this->assertSame((int) $id, $r->lastId());
    }

    /** @dataProvider provideResults */
    public function testIterateOverResults(bool $driverTestable, bool $stringCoersion, string $class, \Closure $func) {
        if (!$driverTestable) {
            $this->markTestSkipped();
        }
        $exp = [0 => 1, 1 => 2, 2 => 3];
        $exp = $stringCoersion ? $this->stringify($exp) : $exp;
        foreach (new $class(...$func("SELECT 1 as col union select 2 as col union select 3 as col")) as $index => $row) {
            $rows[$index] = $row['col'];
        }
        $this->assertSame($exp, $rows);
    }

    /** @dataProvider provideResults */
    public function testIterateOverResultsTwice(bool $driverTestable, bool $stringCoersion, string $class, \Closure $func) {
        if (!$driverTestable) {
            $this->markTestSkipped();
        }
        $exp = [0 => 1, 1 => 2, 2 => 3];
        $exp = $stringCoersion ? $this->stringify($exp) : $exp;
        $result = new $class(...$func("SELECT 1 as col union select 2 as col union select 3 as col"));
        foreach ($result as $index => $row) {
            $rows[$index] = $row['col'];
        }
        $this->assertSame($exp, $rows);
        $this->assertException("resultReused", "Db");
        foreach ($result as $row) {
            $rows[] = $row['col'];
        }
    }

    /** @dataProvider provideResults */
    public function testGetSingleValues(bool $driverTestable, bool $stringCoersion, string $class, \Closure $func) {
        if (!$driverTestable) {
            $this->markTestSkipped();
        }
        $exp = [1867, 1970, 2112];
        $exp = $stringCoersion ? $this->stringify($exp) : $exp;
        $test = new $class(...$func("SELECT 1867 as year union select 1970 as year union select 2112 as year"));
        $this->assertSame($exp[0], $test->getValue());
        $this->assertSame($exp[1], $test->getValue());
        $this->assertSame($exp[2], $test->getValue());
        $this->assertSame(null, $test->getValue());
    }

    /** @dataProvider provideResults */
    public function testGetFirstValuesOnly(bool $driverTestable, bool $stringCoersion, string $class, \Closure $func) {
        if (!$driverTestable) {
            $this->markTestSkipped();
        }
        $exp = [1867, 1970, 2112];
        $exp = $stringCoersion ? $this->stringify($exp) : $exp;
        $test = new $class(...$func("SELECT 1867 as year, 19 as century union select 1970 as year, 20 as century union select 2112 as year, 22 as century"));
        $this->assertSame($exp[0], $test->getValue());
        $this->assertSame($exp[1], $test->getValue());
        $this->assertSame($exp[2], $test->getValue());
        $this->assertSame(null, $test->getValue());
    }

    /** @dataProvider provideResults */
    public function testGetRows(bool $driverTestable, bool $stringCoersion, string $class, \Closure $func) {
        if (!$driverTestable) {
            $this->markTestSkipped();
        }
        $exp = [
            ['album' => '2112',             'track' => '2112'],
            ['album' => 'Clockwork Angels', 'track' => 'The Wreckers'],
        ];
        $test = new $class(...$func("SELECT '2112' as album, '2112' as track union select 'Clockwork Angels' as album, 'The Wreckers' as track"));
        $this->assertSame($exp[0], $test->getRow());
        $this->assertSame($exp[1], $test->getRow());
        $this->assertSame(null, $test->getRow());
    }

    /** @dataProvider provideResults */
    public function testGetAllRows(bool $driverTestable, bool $stringCoersion, string $class, \Closure $func) {
        if (!$driverTestable) {
            $this->markTestSkipped();
        }
        $exp = [
            ['album' => '2112',             'track' => '2112'],
            ['album' => 'Clockwork Angels', 'track' => 'The Wreckers'],
        ];
        $test = new $class(...$func("SELECT '2112' as album, '2112' as track union select 'Clockwork Angels' as album, 'The Wreckers' as track"));
        $this->assertEquals($exp, $test->getAll());
    }
}