<?php

use PHPUnit\Framework\TestCase;

/**
 * PureLogicTest — PHPUnit version covering pure logic that isn't in other test classes.
 *
 * Includes: splitJuryByRole, collectCaptionPaths, detectFileType,
 * generateAuthorSlug, ExportController CSV_HEADERS consistency.
 */
class PureLogicTest extends TestCase
{
    private function getTfeController(): TfeController
    {
        // We need a TfeController instance to test protected methods.
        // Use the anonymous subclass pattern.
        $db = TestDatabase::getInstance();
        return new class($db) extends TfeController {
            public function exposedSplitJuryByRole(array $jury): array { return $this->splitJuryByRole($jury); }
            public function exposedCollectCaptionPaths(array $files): array { return $this->collectCaptionPaths($files); }
        };
    }

    private function getThesisCreateController(): ThesisCreateController
    {
        $db = TestDatabase::getInstance();
        return new class($db) extends ThesisCreateController {
            public function exposedDetectFileType(string $mimeType, string $ext): string { return $this->detectFileType($mimeType, $ext); }
        };
    }

    // ── splitJuryByRole ──────────────────────────────────────────────────────

    public function testSplitJuryByRoleAllRoles(): void
    {
        $ctrl = $this->getTfeController();
        $jury = [
            ['name' => 'Alice', 'role' => 'president',  'is_external' => 0, 'is_ulb' => 0],
            ['name' => 'Bob',   'role' => 'promoteur',  'is_external' => 0, 'is_ulb' => 0],
            ['name' => 'Carol', 'role' => 'promoteur',  'is_external' => 1, 'is_ulb' => 1],
            ['name' => 'Dave',  'role' => 'promoteur',  'is_external' => 1, 'is_ulb' => 0],
            ['name' => 'Eve',   'role' => 'lecteur',    'is_external' => 0, 'is_ulb' => 0],
            ['name' => 'Frank', 'role' => 'lecteur',    'is_external' => 1, 'is_ulb' => 0],
        ];
        $split = $ctrl->exposedSplitJuryByRole($jury);

        $this->assertSame(['Alice'], $split['presidents']);
        $this->assertSame(['Bob'], $split['internes']);
        $this->assertSame(['Carol'], $split['ulb']);
        $this->assertSame(['Dave'], $split['externes']);
        $this->assertSame(['Eve'], $split['lecteurs_internes']);
        $this->assertSame(['Frank'], $split['lecteurs_externes']);
    }

    public function testSplitJuryByRoleEmptyNameSkipped(): void
    {
        $ctrl = $this->getTfeController();
        $jury = [['name' => '', 'role' => 'president', 'is_external' => 0, 'is_ulb' => 0]];
        $split = $ctrl->exposedSplitJuryByRole($jury);

        $this->assertEmpty($split['presidents']);
    }

    public function testSplitJuryByRoleEmptyJury(): void
    {
        $ctrl = $this->getTfeController();
        $split = $ctrl->exposedSplitJuryByRole([]);

        $this->assertEmpty($split['presidents']);
        $this->assertEmpty($split['internes']);
        $this->assertEmpty($split['ulb']);
        $this->assertEmpty($split['externes']);
        $this->assertEmpty($split['lecteurs_internes']);
        $this->assertEmpty($split['lecteurs_externes']);
    }

    // ── collectCaptionPaths ──────────────────────────────────────────────────

    public function testCollectCaptionPathsVttByMime(): void
    {
        $ctrl = $this->getTfeController();
        $files = [
            ['mime_type' => 'application/pdf', 'file_path' => 'main.pdf'],
            ['mime_type' => 'text/vtt',        'file_path' => 'captions1.vtt'],
            ['mime_type' => 'video/mp4',       'file_path' => 'video.mp4'],
            ['mime_type' => 'text/plain',      'file_path' => 'captions2.vtt'],
        ];
        $captions = $ctrl->exposedCollectCaptionPaths($files);

        // Only the VTT files, in order
        $this->assertCount(2, $captions);
        $this->assertSame('captions1.vtt', $captions[0]);
        $this->assertSame('captions2.vtt', $captions[1]);
    }

    public function testCollectCaptionPathsVttByExtension(): void
    {
        $ctrl = $this->getTfeController();
        $files = [
            ['mime_type' => 'application/octet-stream', 'file_path' => 'sub.vtt'],
            ['mime_type' => 'video/mp4',                'file_path' => 'video.mp4'],
        ];
        $captions = $ctrl->exposedCollectCaptionPaths($files);

        $this->assertCount(1, $captions);
        $this->assertSame('sub.vtt', $captions[0]);
    }

    public function testCollectCaptionPathsNoVttReturnsEmpty(): void
    {
        $ctrl = $this->getTfeController();
        $files = [['mime_type' => 'video/mp4', 'file_path' => 'video.mp4']];

        $this->assertEmpty($ctrl->exposedCollectCaptionPaths($files));
    }

    // ── detectFileType ───────────────────────────────────────────────────────

    public function testDetectFileTypeByMime(): void
    {
        $ctrl = $this->getThesisCreateController();

        $this->assertSame('caption', $ctrl->exposedDetectFileType('text/vtt', 'vtt'));
        $this->assertSame('audio', $ctrl->exposedDetectFileType('audio/mpeg', 'mp3'));
        $this->assertSame('audio', $ctrl->exposedDetectFileType('audio/ogg', 'ogg'));
        $this->assertSame('video', $ctrl->exposedDetectFileType('video/mp4', 'mp4'));
        $this->assertSame('video', $ctrl->exposedDetectFileType('video/webm', 'webm'));
        $this->assertSame('main', $ctrl->exposedDetectFileType('application/pdf', 'pdf'));
        $this->assertSame('image', $ctrl->exposedDetectFileType('image/jpeg', 'jpg'));
        $this->assertSame('image', $ctrl->exposedDetectFileType('image/png', 'png'));
        $this->assertSame('other', $ctrl->exposedDetectFileType('application/zip', 'zip'));
    }

    public function testDetectFileTypeByExtensionFallback(): void
    {
        $ctrl = $this->getThesisCreateController();

        $this->assertSame('audio', $ctrl->exposedDetectFileType('application/octet-stream', 'mp3'));
        $this->assertSame('video', $ctrl->exposedDetectFileType('application/octet-stream', 'mp4'));
        $this->assertSame('main', $ctrl->exposedDetectFileType('application/octet-stream', 'pdf'));
        $this->assertSame('image', $ctrl->exposedDetectFileType('application/octet-stream', 'webp'));
        $this->assertSame('caption', $ctrl->exposedDetectFileType('application/octet-stream', 'vtt'));
    }
}