using MeetingAssistant.MeetingNotes;
using MeetingAssistant.Summary;
using Microsoft.Extensions.Logging.Abstractions;
using Microsoft.Extensions.Options;

namespace MeetingAssistant.Tests;

public sealed class MeetingSummaryArtifactResolverTests
{
    [Fact]
    public async Task ResolverFindsMeetingArtifactsForSummaryPath()
    {
        var root = Path.Combine(Path.GetTempPath(), "meeting-assistant-tests", Guid.NewGuid().ToString("N"));
        var notes = Path.Combine(root, "Meetings", "Notes");
        var summaries = Path.Combine(root, "Meetings", "Summaries");
        Directory.CreateDirectory(notes);
        Directory.CreateDirectory(summaries);
        var notePath = Path.Combine(notes, "meeting.md");
        var assistantContextPath = Path.Combine(root, "Meetings", "Assistant Context", "context.md");
        Directory.CreateDirectory(Path.GetDirectoryName(assistantContextPath)!);
        await File.WriteAllTextAsync(assistantContextPath, "# Assistant Context");
        await File.WriteAllTextAsync(
            notePath,
            """
            ---
            title: Meeting
            attendees:
            projects:
            transcript: "[[../Transcripts/transcript|Transcript]]"
            assistant_context: "[[../Assistant Context/context|Assistant Context]]"
            summary: "[[../Summaries/summary|Summary]]"
            ---

            User notes.
            """);
        var options = Options.Create(new MeetingAssistantOptions
        {
            Vault = new VaultOptions
            {
                MeetingNotesFolder = notes,
                SummariesFolder = summaries
            }
        });
        var resolver = new MeetingSummaryArtifactResolver(
            options,
            new MarkdownMeetingNoteStore(options, NullLogger<MarkdownMeetingNoteStore>.Instance));

        var artifacts = await resolver.ResolveBySummaryPathAsync("summary.md", CancellationToken.None);

        Assert.NotNull(artifacts);
        Assert.Equal(notePath, artifacts.MeetingNotePath);
        Assert.Equal(Path.Combine(root, "Meetings", "Transcripts", "transcript.md"), artifacts.TranscriptPath);
        Assert.Equal(assistantContextPath, artifacts.AssistantContextPath);
        Assert.Equal(Path.Combine(summaries, "summary.md"), artifacts.SummaryPath);
    }

    [Fact]
    public async Task ResolverPrefersArtifactLinksFromRequestedSummaryFile()
    {
        var root = Path.Combine(Path.GetTempPath(), "meeting-assistant-tests", Guid.NewGuid().ToString("N"));
        var notes = Path.Combine(root, "Meetings", "Notes");
        var summaries = Path.Combine(root, "Meetings", "Summaries");
        Directory.CreateDirectory(notes);
        Directory.CreateDirectory(summaries);
        var notePath = Path.Combine(notes, "meeting.md");
        var transcriptPath = Path.Combine(root, "Meetings", "Transcripts", "transcript.md");
        var summaryContextPath = Path.Combine(root, "Meetings", "Assistant Context", "summary-context.md");
        Directory.CreateDirectory(Path.GetDirectoryName(summaryContextPath)!);
        await File.WriteAllTextAsync(summaryContextPath, "# Summary-linked Assistant Context");
        await File.WriteAllTextAsync(
            notePath,
            """
            ---
            title: Meeting
            transcript: "[[../Transcripts/transcript|Transcript]]"
            assistant_context: "[[../Assistant Context/stale-context|Assistant Context]]"
            summary: "[[../Summaries/summary|Summary]]"
            ---
            """);
        await File.WriteAllTextAsync(
            Path.Combine(summaries, "summary.md"),
            """
            ---
            meeting: "[[../Notes/meeting|Meeting Note]]"
            transcript: "[[../Transcripts/transcript|Transcript]]"
            assistant_context: "[[../Assistant Context/summary-context|Assistant Context]]"
            ---
            """);
        var options = Options.Create(new MeetingAssistantOptions
        {
            Vault = new VaultOptions
            {
                MeetingNotesFolder = notes,
                SummariesFolder = summaries
            }
        });
        var resolver = new MeetingSummaryArtifactResolver(
            options,
            new MarkdownMeetingNoteStore(options, NullLogger<MarkdownMeetingNoteStore>.Instance));

        var artifacts = await resolver.ResolveBySummaryPathAsync("summary.md", CancellationToken.None);

        Assert.NotNull(artifacts);
        Assert.Equal(notePath, artifacts.MeetingNotePath);
        Assert.Equal(transcriptPath, artifacts.TranscriptPath);
        Assert.Equal(summaryContextPath, artifacts.AssistantContextPath);
        Assert.Equal(Path.Combine(summaries, "summary.md"), artifacts.SummaryPath);
    }

    [Fact]
    public async Task ResolverRejectsSummaryWhenLinkedAssistantContextIsMissing()
    {
        var root = Path.Combine(Path.GetTempPath(), "meeting-assistant-tests", Guid.NewGuid().ToString("N"));
        var notes = Path.Combine(root, "Meetings", "Notes");
        var summaries = Path.Combine(root, "Meetings", "Summaries");
        Directory.CreateDirectory(notes);
        Directory.CreateDirectory(summaries);
        await File.WriteAllTextAsync(
            Path.Combine(notes, "meeting.md"),
            """
            ---
            title: Meeting
            transcript: "[[../Transcripts/transcript|Transcript]]"
            assistant_context: "[[../Assistant Context/missing-context|Assistant Context]]"
            summary: "[[../Summaries/summary|Summary]]"
            ---
            """);
        var options = Options.Create(new MeetingAssistantOptions
        {
            Vault = new VaultOptions
            {
                MeetingNotesFolder = notes,
                SummariesFolder = summaries
            }
        });
        var resolver = new MeetingSummaryArtifactResolver(
            options,
            new MarkdownMeetingNoteStore(options, NullLogger<MarkdownMeetingNoteStore>.Instance));

        var artifacts = await resolver.ResolveBySummaryPathAsync("summary.md", CancellationToken.None);

        Assert.Null(artifacts);
    }

    [Fact]
    public async Task ResolverRejectsSummaryPathOutsideConfiguredSummaryFolder()
    {
        var root = Path.Combine(Path.GetTempPath(), "meeting-assistant-tests", Guid.NewGuid().ToString("N"));
        var options = Options.Create(new MeetingAssistantOptions
        {
            Vault = new VaultOptions
            {
                MeetingNotesFolder = Path.Combine(root, "Notes"),
                SummariesFolder = Path.Combine(root, "Summaries")
            }
        });
        var resolver = new MeetingSummaryArtifactResolver(
            options,
            new MarkdownMeetingNoteStore(options, NullLogger<MarkdownMeetingNoteStore>.Instance));

        var artifacts = await resolver.ResolveBySummaryPathAsync(
            Path.Combine(root, "Other", "summary.md"),
            CancellationToken.None);

        Assert.Null(artifacts);
    }

    [Fact]
    public async Task ResolverUsesSuppliedProfileOptionsForSummaryLookup()
    {
        var root = Path.Combine(Path.GetTempPath(), "meeting-assistant-tests", Guid.NewGuid().ToString("N"));
        var defaultRoot = Path.Combine(root, "default");
        var englishRoot = Path.Combine(root, "english");
        var englishNotes = Path.Combine(englishRoot, "Notes");
        var englishSummaries = Path.Combine(englishRoot, "Summaries");
        Directory.CreateDirectory(englishNotes);
        Directory.CreateDirectory(englishSummaries);
        var notePath = Path.Combine(englishNotes, "meeting.md");
        var assistantContextPath = Path.Combine(englishRoot, "Assistant Context", "context.md");
        Directory.CreateDirectory(Path.GetDirectoryName(assistantContextPath)!);
        await File.WriteAllTextAsync(assistantContextPath, "# Assistant Context");
        await File.WriteAllTextAsync(
            notePath,
            """
            ---
            title: Meeting
            attendees:
            projects:
            transcript: "[[../Transcripts/transcript|Transcript]]"
            assistant_context: "[[../Assistant Context/context|Assistant Context]]"
            summary: "[[../Summaries/summary|Summary]]"
            ---

            User notes.
            """);
        var defaultOptions = Options.Create(new MeetingAssistantOptions
        {
            Vault = new VaultOptions
            {
                MeetingNotesFolder = Path.Combine(defaultRoot, "Notes"),
                SummariesFolder = Path.Combine(defaultRoot, "Summaries")
            }
        });
        var profileOptions = new MeetingAssistantOptions
        {
            Vault = new VaultOptions
            {
                MeetingNotesFolder = englishNotes,
                SummariesFolder = englishSummaries
            }
        };
        var resolver = new MeetingSummaryArtifactResolver(
            defaultOptions,
            new MarkdownMeetingNoteStore(defaultOptions, NullLogger<MarkdownMeetingNoteStore>.Instance));

        var artifacts = await resolver.ResolveBySummaryPathAsync("summary.md", profileOptions, CancellationToken.None);

        Assert.NotNull(artifacts);
        Assert.Equal(notePath, artifacts.MeetingNotePath);
        Assert.Equal(Path.Combine(englishSummaries, "summary.md"), artifacts.SummaryPath);
    }
}