<?php

use App\Models\VideoProject;
use App\Models\WorkflowStep;
use App\Support\AssetStorage\AssetStorage;
use Illuminate\Support\Facades\Storage;

beforeEach(function () {
    Storage::fake();
    $this->storage = new AssetStorage;
});

test('storing content writes the file and creates an asset record', function () {
    $project = VideoProject::factory()->create();

    $asset = $this->storage->store($project, 'script', 'Once upon a time...', 'txt', mimeType: 'text/plain');

    expect($asset->type)->toBe('script');
    expect($asset->version)->toBe(1);
    expect($asset->size_bytes)->toBe(strlen('Once upon a time...'));
    expect($asset->mime_type)->toBe('text/plain');
    expect($asset->video_project_id)->toBe($project->id);

    Storage::assertExists($asset->disk_path);
    expect(Storage::get($asset->disk_path))->toBe('Once upon a time...');
});

test('storing the same slot again increments the version instead of overwriting', function () {
    $project = VideoProject::factory()->create();

    $v1 = $this->storage->store($project, 'script', 'draft one', 'txt');
    $v2 = $this->storage->store($project, 'script', 'draft two', 'txt');

    expect($v1->version)->toBe(1);
    expect($v2->version)->toBe(2);
    expect($v1->disk_path)->not->toBe($v2->disk_path);

    Storage::assertExists($v1->disk_path);
    Storage::assertExists($v2->disk_path);
    expect(Storage::get($v1->disk_path))->toBe('draft one');
    expect(Storage::get($v2->disk_path))->toBe('draft two');
});

test('versioning is scoped per workflow step when one is given', function () {
    $project = VideoProject::factory()->create();
    $stepA = WorkflowStep::factory()->for($project)->create(['order' => 0]);
    $stepB = WorkflowStep::factory()->for($project)->create(['order' => 1]);

    $a = $this->storage->store($project, 'script', 'from step A', 'txt', step: $stepA);
    $b = $this->storage->store($project, 'script', 'from step B', 'txt', step: $stepB);

    expect($a->version)->toBe(1);
    expect($b->version)->toBe(1);
});

test('contents retrieves the stored file', function () {
    $project = VideoProject::factory()->create();
    $asset = $this->storage->store($project, 'script', 'hello', 'txt');

    expect($this->storage->contents($asset))->toBe('hello');
});

test('url returns null for a missing file and a path for an existing one', function () {
    $project = VideoProject::factory()->create();
    $asset = $this->storage->store($project, 'script', 'hello', 'txt');

    expect($this->storage->url($asset))->not->toBeNull();

    Storage::delete($asset->disk_path);

    expect($this->storage->url($asset))->toBeNull();
});

test('delete removes the file and the asset record', function () {
    $project = VideoProject::factory()->create();
    $asset = $this->storage->store($project, 'script', 'hello', 'txt');

    $this->storage->delete($asset);

    Storage::assertMissing($asset->disk_path);
    expect(\App\Models\Asset::find($asset->id))->toBeNull();
});

test('pruneOldVersions keeps only the newest N versions', function () {
    $project = VideoProject::factory()->create();

    $versions = collect(range(1, 5))->map(
        fn ($i) => $this->storage->store($project, 'script', "draft {$i}", 'txt')
    );

    $pruned = $this->storage->pruneOldVersions($project, 'script', keep: 2);

    expect($pruned)->toBe(3);

    $remaining = $project->assets()->where('type', 'script')->pluck('version')->sort()->values();
    expect($remaining->all())->toBe([4, 5]);

    Storage::assertMissing($versions[0]->disk_path);
    Storage::assertMissing($versions[1]->disk_path);
    Storage::assertMissing($versions[2]->disk_path);
    Storage::assertExists($versions[3]->disk_path);
    Storage::assertExists($versions[4]->disk_path);
});

test('pruneOldVersions does nothing when there are fewer versions than the keep count', function () {
    $project = VideoProject::factory()->create();
    $this->storage->store($project, 'script', 'only draft', 'txt');

    $pruned = $this->storage->pruneOldVersions($project, 'script', keep: 3);

    expect($pruned)->toBe(0);
    expect($project->assets()->count())->toBe(1);
});