<?php

use PHPUnit\Framework\TestCase;

/**
 * ThesisEditValidationTest — Tests for ThesisEditController validation helpers
 * (collectJuryMembers, handleWebsiteUrl, load).
 */
class ThesisEditValidationTest extends TestCase
{
    private PDO $pdo;
    private ThesisEditController $ctrl;

    protected function setUp(): void
    {
        TestDatabase::resetData();
        $this->pdo = TestDatabase::getPDO();
        $db = TestDatabase::getInstance();
        $this->ctrl = new ThesisEditController($db);
    }

    // ── load() ───────────────────────────────────────────────────────────────

    public function testLoadReturnsDataForKnownId(): void
    {
        [$authorId, $thesisId] = TestDatabase::seedBasicThesis('Load Test', 'Author Name', 2024);

        $data = $this->ctrl->load($thesisId);

        $this->assertIsArray($data);
        $this->assertArrayHasKey('thesis', $data);
        $this->assertSame('Load Test', $data['thesis']['title']);
        $this->assertArrayHasKey('orientations', $data);
        $this->assertArrayHasKey('formatTypes', $data);
    }

    public function testLoadThrowsOnUnknownId(): void
    {
        $this->expectException(RuntimeException::class);
        $this->expectExceptionMessage('TFE non trouvé');

        $this->ctrl->load(9999);
    }

    public function testLoadThrowsOnInvalidId(): void
    {
        $this->expectException(InvalidArgumentException::class);
        $this->expectExceptionMessage('ID invalide');

        $this->ctrl->load(0);
    }

    public function testLoadThrowsOnNegativeId(): void
    {
        $this->expectException(InvalidArgumentException::class);
        $this->expectExceptionMessage('ID invalide');

        $this->ctrl->load(-5);
    }

    // ── collectJuryMembers (private, test via reflection) ─────────────────────

    private function collectJuryMembers(array $post): array
    {
        $ref = new ReflectionMethod(ThesisEditController::class, 'collectJuryMembers');
        return $ref->invoke($this->ctrl, $post);
    }

    public function testCollectJuryMembersEmptyInput(): void
    {
        $members = $this->collectJuryMembers([]);
        $this->assertIsArray($members);
        $this->assertEmpty($members);
    }

    public function testCollectJuryMembersSinglePromoteur(): void
    {
        $post = ['jury_promoteur' => ['John Smith']];
        $members = $this->collectJuryMembers($post);

        $this->assertCount(1, $members);
        $this->assertSame('promoteur', $members[0]['role']);
        $this->assertSame('John Smith', $members[0]['name']);
        $this->assertSame(0, $members[0]['is_external']);
        $this->assertSame(0, $members[0]['is_ulb']);
    }

    public function testCollectJuryMembersPromoteurUlb(): void
    {
        $post = ['jury_promoteur_ulb_name' => ['ULB Prof']];
        $members = $this->collectJuryMembers($post);

        $this->assertCount(1, $members);
        $this->assertSame('promoteur', $members[0]['role']);
        $this->assertSame(1, $members[0]['is_external']);
        $this->assertSame(1, $members[0]['is_ulb']);
    }

    public function testCollectJuryMembersLecteurs(): void
    {
        $post = [
            'jury_lecteur_interne' => ['Int One', 'Int Two'],
            'jury_lecteur_externe' => ['Ext One'],
        ];
        $members = $this->collectJuryMembers($post);

        $this->assertCount(3, $members);

        $internes = array_filter($members, fn ($m) => $m['is_external'] === 0 && $m['role'] === 'lecteur');
        $externes = array_filter($members, fn ($m) => $m['is_external'] === 1 && $m['role'] === 'lecteur');

        $this->assertCount(2, $internes);
        $this->assertCount(1, $externes);
    }

    public function testCollectJuryMembersDeduplicatesEmptyStrings(): void
    {
        $post = [
            'jury_promoteur' => ['John', '', ' ', 'Jane'],
        ];
        $members = $this->collectJuryMembers($post);

        $names = array_column($members, 'name');
        $this->assertCount(2, $names);
        $this->assertContains('John', $names);
        $this->assertContains('Jane', $names);
    }

    public function testCollectJuryMembersScalarPromoteurAccepted(): void
    {
        // Accepts scalar instead of array for promoteur fields
        $post = ['jury_promoteur' => 'Single Promoter'];
        $members = $this->collectJuryMembers($post);

        $this->assertCount(1, $members);
        $this->assertSame('Single Promoter', $members[0]['name']);
    }

    // ── handleWebsiteUrl (private, test via reflection) ───────────────────────

    private function invokeHandleWebsiteUrl(int $thesisId, array $post): void
    {
        $ref = new ReflectionMethod(ThesisEditController::class, 'handleWebsiteUrl');
        $ref->invoke($this->ctrl, $thesisId, $post);
    }

    public function testHandleWebsiteUrlStoresValidUrl(): void
    {
        [$authorId, $thesisId] = TestDatabase::seedBasicThesis('Website Test', 'Author', 2024);
        $post = ['website_url' => 'https://example.com', 'website_label' => 'My Site'];

        $this->invokeHandleWebsiteUrl($thesisId, $post);

        $pdo = TestDatabase::getPDO();
        $files = $pdo->query("SELECT * FROM thesis_files WHERE thesis_id = $thesisId AND file_type = 'website'")->fetchAll();
        $this->assertCount(1, $files);
        $this->assertSame('https://example.com', $files[0]['file_path']);
        $this->assertSame('My Site', $files[0]['display_label']);
    }

    public function testHandleWebsiteUrlSkipsInvalidUrl(): void
    {
        [$authorId, $thesisId] = TestDatabase::seedBasicThesis('Bad URL Test', 'Author', 2024);
        $post = ['website_url' => 'not-a-url'];

        $this->invokeHandleWebsiteUrl($thesisId, $post);

        $pdo = TestDatabase::getPDO();
        $count = $pdo->query("SELECT COUNT(*) FROM thesis_files WHERE thesis_id = $thesisId AND file_type = 'website'")->fetchColumn();
        $this->assertSame(0, (int)$count);
    }

    public function testHandleWebsiteUrlSkipsEmptyUrl(): void
    {
        [$authorId, $thesisId] = TestDatabase::seedBasicThesis('Empty URL', 'Author', 2024);
        $post = ['website_url' => ''];

        $this->invokeHandleWebsiteUrl($thesisId, $post);

        $pdo = TestDatabase::getPDO();
        $count = $pdo->query("SELECT COUNT(*) FROM thesis_files WHERE thesis_id = $thesisId AND file_type = 'website'")->fetchColumn();
        $this->assertSame(0, (int)$count);
    }

    public function testHandleWebsiteUrlNormalisesHttp(): void
    {
        [$authorId, $thesisId] = TestDatabase::seedBasicThesis('HTTP URL Test', 'Author', 2024);
        $post = ['website_url' => 'https://example.com/path'];

        $this->invokeHandleWebsiteUrl($thesisId, $post);

        $pdo = TestDatabase::getPDO();
        $file = $pdo->query("SELECT * FROM thesis_files WHERE thesis_id = $thesisId AND file_type = 'website'")->fetch();
        $this->assertStringContainsString('example.com/path', $file['file_name']);
    }

    // ── handleWebsiteUrl regression: existing rows preserved (not deleted-then-recreated) ─

    public function testHandleWebsiteUrlPreservesExistingRowWhenUrlUnchanged(): void
    {
        [$authorId, $thesisId] = TestDatabase::seedBasicThesis('Keep Site', 'Author', 2024);
        $pdo = TestDatabase::getPDO();

        // Seed an existing website row
        $pdo->prepare(
            "INSERT INTO thesis_files (thesis_id, file_type, file_path, file_name, file_size, mime_type, display_label)
             VALUES (?, 'website', 'https://old.example.com', 'old.example.com', 0, 'text/html', 'Old Label')"
        )->execute([$thesisId]);
        $oldId = (int)$pdo->lastInsertId();

        // Submit the SAME URL (no change intended)
        $post = ['website_url' => 'https://old.example.com'];
        $this->invokeHandleWebsiteUrl($thesisId, $post);

        // The row should still exist with the same ID and (crucially) preserved label
        $row = $pdo->query("SELECT * FROM thesis_files WHERE thesis_id = $thesisId AND file_type = 'website'")->fetch();
        $this->assertNotFalse($row, 'Website row should still exist');
        $this->assertSame($oldId, (int)$row['id'], 'Row ID should be preserved (not delete+reinsert)');
        $this->assertSame('Old Label', $row['display_label'], 'Label should be preserved when no new label is given');
        $this->assertSame('https://old.example.com', $row['file_path']);
    }

    public function testHandleWebsiteUrlPreservesLabelWhenNotProvided(): void
    {
        [$authorId, $thesisId] = TestDatabase::seedBasicThesis('Label Preserve', 'Author', 2024);
        $pdo = TestDatabase::getPDO();

        $pdo->prepare(
            "INSERT INTO thesis_files (thesis_id, file_type, file_path, file_name, file_size, mime_type, display_label)
             VALUES (?, 'website', 'https://example.com', 'example.com', 0, 'text/html', 'My Custom Label')"
        )->execute([$thesisId]);

        // Submit URL without a label
        $post = ['website_url' => 'https://example.com', 'website_label' => ''];
        $this->invokeHandleWebsiteUrl($thesisId, $post);

        $row = $pdo->query("SELECT * FROM thesis_files WHERE thesis_id = $thesisId AND file_type = 'website'")->fetch();
        $this->assertSame('My Custom Label', $row['display_label'], 'Existing label should survive when no new label is provided');
    }

    public function testHandleWebsiteUrlUpdatesLabelWhenProvided(): void
    {
        [$authorId, $thesisId] = TestDatabase::seedBasicThesis('Label Update', 'Author', 2024);
        $pdo = TestDatabase::getPDO();

        $pdo->prepare(
            "INSERT INTO thesis_files (thesis_id, file_type, file_path, file_name, file_size, mime_type, display_label)
             VALUES (?, 'website', 'https://example.com', 'example.com', 0, 'text/html', 'Old Label')"
        )->execute([$thesisId]);

        $post = ['website_url' => 'https://example.com', 'website_label' => 'New Label'];
        $this->invokeHandleWebsiteUrl($thesisId, $post);

        $row = $pdo->query("SELECT * FROM thesis_files WHERE thesis_id = $thesisId AND file_type = 'website'")->fetch();
        $this->assertSame('New Label', $row['display_label']);
    }

    public function testHandleWebsiteUrlDeletesRowWhenUrlExplicitlyCleared(): void
    {
        [$authorId, $thesisId] = TestDatabase::seedBasicThesis('Clear Site', 'Author', 2024);
        $pdo = TestDatabase::getPDO();

        $pdo->prepare(
            "INSERT INTO thesis_files (thesis_id, file_type, file_path, file_name, file_size, mime_type, display_label)
             VALUES (?, 'website', 'https://example.com', 'example.com', 0, 'text/html', 'Label')"
        )->execute([$thesisId]);

        // Explicitly clear the URL
        $post = ['website_url' => ''];
        $this->invokeHandleWebsiteUrl($thesisId, $post);

        $count = $pdo->query("SELECT COUNT(*) FROM thesis_files WHERE thesis_id = $thesisId AND file_type = 'website'")->fetchColumn();
        $this->assertSame(0, (int)$count, 'Website row should be deleted when URL is explicitly cleared');
    }

    public function testHandleWebsiteUrlUpdatesUrlWhenChanged(): void
    {
        [$authorId, $thesisId] = TestDatabase::seedBasicThesis('Change URL', 'Author', 2024);
        $pdo = TestDatabase::getPDO();

        $pdo->prepare(
            "INSERT INTO thesis_files (thesis_id, file_type, file_path, file_name, file_size, mime_type, display_label)
             VALUES (?, 'website', 'https://old.example.com', 'old.example.com', 0, 'text/html', 'Label')"
        )->execute([$thesisId]);
        $oldId = (int)$pdo->lastInsertId();

        $post = ['website_url' => 'https://new.example.com'];
        $this->invokeHandleWebsiteUrl($thesisId, $post);

        $row = $pdo->query("SELECT * FROM thesis_files WHERE thesis_id = $thesisId AND file_type = 'website'")->fetch();
        $this->assertSame($oldId, (int)$row['id'], 'Row ID should be preserved on URL update');
        $this->assertSame('https://new.example.com', $row['file_path']);
        $this->assertSame('Label', $row['display_label'], 'Label should be preserved on URL-only change');
    }

    public function testHandleWebsiteUrlNoExistingRowEmptyUrlDoesNothing(): void
    {
        [$authorId, $thesisId] = TestDatabase::seedBasicThesis('Noop', 'Author', 2024);
        $pdo = TestDatabase::getPDO();

        // Should not error even with no existing row
        $post = ['website_url' => ''];
        $this->invokeHandleWebsiteUrl($thesisId, $post);

        $count = $pdo->query("SELECT COUNT(*) FROM thesis_files WHERE thesis_id = $thesisId AND file_type = 'website'")->fetchColumn();
        $this->assertSame(0, (int)$count);

        // All other files should still be intact
        $totalFiles = $pdo->query("SELECT COUNT(*) FROM thesis_files WHERE thesis_id = $thesisId")->fetchColumn();
        $this->assertGreaterThan(0, (int)$totalFiles, 'Cover file from seeding should still exist');
    }
}