using Novelly.Api.Beats;
using Novelly.Api.Chapters;
using Novelly.Api.Characters;
using Novelly.Api.Common;
using Novelly.Api.Projects;

namespace Novelly.Api.Tests;

[TestFixture]
public class CharacterArcTests : ServiceTestFixture
{
    private Guid _projectId;
    private Guid _characterId;

    protected override void OnSetUp()
    {
        _projectId = Projects.CreateAsync(new CreateProjectRequest("The Salt Road")).Result.Id;
        _characterId = Characters.CreateAsync(
            _projectId,
            new CreateCharacterRequest("Ines", CharacterRole.Protagonist, CharacterImportance.Main))
            .Result.Id;
    }

    [Test]
    public async Task A_character_is_supporting_until_promoted()
    {
        var mara = await Characters.CreateAsync(_projectId, new CreateCharacterRequest("Mara"));

        Assert.That(mara.Importance, Is.EqualTo(CharacterImportance.Supporting));

        var promoted = (await Characters.UpdateAsync(
            mara.Id, new UpdateCharacterRequest(Importance: CharacterImportance.Main)))!;

        Assert.That(promoted.Importance, Is.EqualTo(CharacterImportance.Main));
    }

    [Test]
    public async Task Importance_is_separate_from_the_part_a_character_plays()
    {
        var mentor = await Characters.CreateAsync(_projectId, new CreateCharacterRequest(
            "Anders", CharacterRole.Mentor, CharacterImportance.Main));

        Assert.Multiple(() =>
        {
            Assert.That(mentor.Role, Is.EqualTo(CharacterRole.Mentor));
            Assert.That(mentor.Importance, Is.EqualTo(CharacterImportance.Main));
        });
    }

    [Test]
    public async Task Main_characters_are_listed_before_supporting_ones()
    {
        await Characters.CreateAsync(_projectId, new CreateCharacterRequest("Zeno"));
        await Characters.CreateAsync(
            _projectId, new CreateCharacterRequest("Mara", Importance: CharacterImportance.Main));

        var listed = await Characters.ListAsync(_projectId);

        Assert.That(
            listed.Select(c => c.Name),
            Is.EqualTo(new[] { "Ines", "Mara", "Zeno" }));
    }

    [Test]
    public async Task Within_a_group_the_lead_comes_before_the_second_lead()
    {
        await Characters.CreateAsync(_projectId, new CreateCharacterRequest(
            "Mara", CharacterRole.Deuteragonist, CharacterImportance.Main));
        await Characters.CreateAsync(_projectId, new CreateCharacterRequest(
            "Anders", CharacterRole.Antagonist, CharacterImportance.Main));

        var listed = await Characters.ListAsync(_projectId);

        Assert.That(
            listed.Select(c => c.Name),
            Is.EqualTo(new[] { "Ines", "Anders", "Mara" }));
    }

    [Test]
    public async Task Arc_stages_are_appended_in_order_and_read_back_that_way()
    {
        await Arcs.CreateAsync(_characterId, new CreateArcStageRequest("She trusts the map"));
        await Arcs.CreateAsync(_characterId, new CreateArcStageRequest("The map is wrong"));
        await Arcs.CreateAsync(_characterId, new CreateArcStageRequest("She navigates by memory"));

        var arc = await Arcs.ListAsync(_characterId);

        Assert.Multiple(() =>
        {
            Assert.That(
                arc.Select(s => s.Title),
                Is.EqualTo(new[] { "She trusts the map", "The map is wrong", "She navigates by memory" }));
            Assert.That(arc.Select(s => s.SortOrder), Is.EqualTo(new[] { 1, 2, 3 }));
        });
    }

    [Test]
    public async Task A_character_dossier_carries_its_arc()
    {
        await Arcs.CreateAsync(_characterId, new CreateArcStageRequest(
            "She trusts the map", Description: "Because her mother drew it."));

        var character = (await Characters.GetAsync(_characterId))!;

        Assert.Multiple(() =>
        {
            Assert.That(character.ArcStages, Has.Count.EqualTo(1));
            Assert.That(character.ArcStages[0].Description, Does.Contain("her mother drew it"));
        });
    }

    [Test]
    public async Task Stages_left_out_of_a_reorder_keep_their_relative_position_at_the_end()
    {
        var first = await Arcs.CreateAsync(_characterId, new CreateArcStageRequest("First"));
        await Arcs.CreateAsync(_characterId, new CreateArcStageRequest("Second"));
        var third = await Arcs.CreateAsync(_characterId, new CreateArcStageRequest("Third"));

        var reordered = await Arcs.ReorderAsync(
            _characterId, new ReorderArcStagesRequest([third.Id, first.Id]));

        Assert.That(
            reordered.Select(s => s.Title),
            Is.EqualTo(new[] { "Third", "First", "Second" }));
    }

    [Test]
    public async Task A_stage_pinned_to_a_chapter_resolves_that_chapter()
    {
        var chapter = await Chapters.CreateAsync(_projectId, new CreateChapterRequest("Landfall"));

        var stage = await Arcs.CreateAsync(
            _characterId, new CreateArcStageRequest("The map is wrong", ChapterId: chapter.Id));

        Assert.Multiple(() =>
        {
            Assert.That(stage.Chapter!.Title, Is.EqualTo("Landfall"));
            Assert.That(stage.Chapter!.Number, Is.EqualTo(1));
        });
    }

    [Test]
    public async Task A_stage_cannot_be_pinned_to_a_chapter_from_another_project()
    {
        var other = await Projects.CreateAsync(new CreateProjectRequest("Other Book"));
        var elsewhere = await Chapters.CreateAsync(other.Id, new CreateChapterRequest("Elsewhere"));

        Assert.That(
            async () => await Arcs.CreateAsync(
                _characterId, new CreateArcStageRequest("A stage", ChapterId: elsewhere.Id)),
            Throws.TypeOf<InvalidOperationException>().With.Message.Contains("same project"));
    }

    [Test]
    public async Task Deleting_a_chapter_unpins_an_arc_stage_rather_than_deleting_it()
    {
        var chapter = await Chapters.CreateAsync(_projectId, new CreateChapterRequest("Landfall"));
        var stage = await Arcs.CreateAsync(
            _characterId, new CreateArcStageRequest("The map is wrong", ChapterId: chapter.Id));

        await Chapters.DeleteAsync(chapter.Id);

        var survivor = (await Arcs.GetAsync(stage.Id))!;

        Assert.Multiple(() =>
        {
            Assert.That(survivor.ChapterId, Is.Null);
            Assert.That(survivor.Title, Is.EqualTo("The map is wrong"));
        });
    }

    [Test]
    public async Task Deleting_a_character_takes_their_arc()
    {
        await Arcs.CreateAsync(_characterId, new CreateArcStageRequest("She trusts the map"));

        await Characters.DeleteAsync(_characterId);

        Assert.That(await Arcs.ListAsync(_characterId), Is.Empty);
    }

    [Test]
    public async Task Reordering_with_an_unknown_stage_returns_null_rather_than_throwing() =>
        Assert.That(
            await Arcs.ReorderAsync(_characterId, new ReorderArcStagesRequest([Guid.NewGuid()])),
            Is.Null);

    [Test]
    public async Task The_character_page_sees_every_beat_they_appear_in_across_the_book()
    {
        var second = await Chapters.CreateAsync(_projectId, new CreateChapterRequest("Second", Number: 2));
        var first = await Chapters.CreateAsync(_projectId, new CreateChapterRequest("First", Number: 1));
        var mara = await Characters.CreateAsync(_projectId, new CreateCharacterRequest("Mara"));

        await Beats.CreateAsync(second.Id, new CreateBeatRequest("She boards anyway", CharacterIds: [_characterId]));
        await Beats.CreateAsync(first.Id, new CreateBeatRequest("She finds the map", CharacterIds: [_characterId]));
        await Beats.CreateAsync(first.Id, new CreateBeatRequest("Mara lies", CharacterIds: [mara.Id]));
        await Beats.CreateAsync(first.Id, new CreateBeatRequest("Nobody's beat"));

        var beats = (await Beats.ListForCharacterAsync(_characterId))!;

        Assert.Multiple(() =>
        {
            Assert.That(beats.Select(b => b.Title), Is.EqualTo(new[] { "She finds the map", "She boards anyway" }));
            Assert.That(beats[0].Chapter!.Number, Is.EqualTo(1));
            Assert.That(beats[0].Chapter!.Title, Is.EqualTo("First"));
            Assert.That(beats[1].ChapterId, Is.EqualTo(second.Id));
        });
    }

    [Test]
    public async Task Asking_for_the_beats_of_a_character_who_does_not_exist_returns_null_rather_than_throwing() =>
        Assert.That(await Beats.ListForCharacterAsync(Guid.NewGuid()), Is.Null);
}