<?php

namespace Tests\Feature;

use App\Models\User;
use App\Models\WeightLog;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;

class WeightLogTest extends TestCase
{
    use RefreshDatabase;

    public function test_guest_cannot_log_weight(): void
    {
        $response = $this->post(route('weight-logs.store'), ['weight_kg' => 80]);

        $response->assertRedirect(route('login'));
    }

    public function test_user_can_log_weight_for_today(): void
    {
        $user = User::factory()->create();

        $response = $this->actingAs($user)->post(route('weight-logs.store'), [
            'weight_kg' => 82.5,
        ]);

        $response->assertRedirect();
        $entry = WeightLog::where('user_id', $user->id)->first();
        $this->assertNotNull($entry);
        $this->assertEquals(82.5, $entry->weight_kg);
        $this->assertEquals(now()->toDateString(), $entry->logged_at->toDateString());
    }

    public function test_logging_twice_for_the_same_date_updates_the_entry(): void
    {
        $user = User::factory()->create();

        $this->actingAs($user)->post(route('weight-logs.store'), [
            'weight_kg' => 80,
            'logged_at' => '2026-01-01',
        ]);
        $this->actingAs($user)->post(route('weight-logs.store'), [
            'weight_kg' => 81,
            'logged_at' => '2026-01-01',
        ]);

        $this->assertEquals(1, WeightLog::where('user_id', $user->id)->count());
        $entry = WeightLog::where('user_id', $user->id)->first();
        $this->assertEquals(81, $entry->weight_kg);
        $this->assertEquals('2026-01-01', $entry->logged_at->toDateString());
    }

    public function test_future_date_is_rejected(): void
    {
        $user = User::factory()->create();

        $response = $this->actingAs($user)->post(route('weight-logs.store'), [
            'weight_kg' => 80,
            'logged_at' => now()->addDay()->toDateString(),
        ]);

        $response->assertSessionHasErrors('logged_at');
    }

    public function test_owner_can_delete_their_entry(): void
    {
        $user = User::factory()->create();
        $log = WeightLog::factory()->create(['user_id' => $user->id]);

        $response = $this->actingAs($user)->delete(route('weight-logs.destroy', $log));

        $response->assertRedirect();
        $this->assertDatabaseMissing('weight_logs', ['id' => $log->id]);
    }

    public function test_other_user_cannot_delete_someone_elses_entry(): void
    {
        $owner = User::factory()->create();
        $other = User::factory()->create();
        $log = WeightLog::factory()->create(['user_id' => $owner->id]);

        $response = $this->actingAs($other)->delete(route('weight-logs.destroy', $log));

        $response->assertForbidden();
        $this->assertDatabaseHas('weight_logs', ['id' => $log->id]);
    }
}