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

namespace MeetingAssistant.Tests;

public sealed class MeetingSummaryFailureWriterTests
{
    [Fact]
    public async Task WriterOverwritesSummaryWithFailureDetails()
    {
        var root = Path.Combine(Path.GetTempPath(), "meeting-assistant-tests", Guid.NewGuid().ToString("N"));
        var artifacts = new MeetingSessionArtifacts(
            Path.Combine(root, "Notes", "meeting.md"),
            Path.Combine(root, "Transcripts", "transcript.md"),
            Path.Combine(root, "Assistant Context", "context.md"),
            Path.Combine(root, "Summaries", "summary.md"));
        Directory.CreateDirectory(Path.GetDirectoryName(artifacts.SummaryPath)!);
        Directory.CreateDirectory(Path.GetDirectoryName(artifacts.MeetingNotePath)!);
        await File.WriteAllTextAsync(
            artifacts.MeetingNotePath,
            """
            ---
            title: Failure Meeting
            start_time: "2026-05-20T10:00:00.0000000+02:00"
            end_time: "2026-05-20T10:30:00.0000000+02:00"
            attendees:
            - Ada
            projects:
            - Current Project
            transcript: "[[../Transcripts/transcript|Transcript]]"
            assistant_context: "[[../Assistant Context/context|Assistant Context]]"
            summary: "[[../Summaries/summary|Summary]]"
            ---
            """);
        await File.WriteAllTextAsync(
            artifacts.SummaryPath,
            """
            ---
            attendees:
            - Preserved
            projects:
            - Stale Project
            ---

            # Old Summary
            """);
        var writer = new MeetingSummaryFailureWriter(
            Options.Create(new MeetingAssistantOptions
            {
                Api = new ApiOptions { PublicBaseUrl = "http://localhost:5090" }
            }),
            new MarkdownMeetingNoteStore(
                Options.Create(new MeetingAssistantOptions
                {
                    Vault = new VaultOptions { MeetingNotesFolder = Path.GetDirectoryName(artifacts.MeetingNotePath)! }
                }),
                Microsoft.Extensions.Logging.Abstractions.NullLogger<MarkdownMeetingNoteStore>.Instance));

        var result = await writer.WriteAsync(
            artifacts,
            new InvalidOperationException("LiteLLM Responses request failed with 500"),
            CancellationToken.None);

        var content = await File.ReadAllTextAsync(artifacts.SummaryPath);
        Assert.False(result.Succeeded);
        Assert.Equal(artifacts.SummaryPath, result.SummaryPath);
        Assert.Contains("Summary Generation Failed", content);
        Assert.Contains("title: Failure Meeting", content);
        Assert.Contains("attendees:", content);
        Assert.Contains("- Preserved", content);
        Assert.DoesNotContain("- Ada", content);
        Assert.Contains("projects:", content);
        Assert.Contains("- Current Project", content);
        Assert.DoesNotContain("- Stale Project", content);
        Assert.Contains("meeting: \"[[../Notes/meeting|Meeting Note]]\"", content);
        Assert.Contains("transcript: \"[[../Transcripts/transcript|Transcript]]\"", content);
        Assert.Contains("assistant_context: \"[[../Assistant Context/context|Assistant Context]]\"", content);
        Assert.DoesNotContain("summary:", content);
        Assert.Contains(
            "[Retry summary generation](http://localhost:5090/meetings/summary/retry?summaryPath=summary.md)",
            content);
        Assert.Contains("LiteLLM Responses request failed with 500", content);
        Assert.Contains(artifacts.TranscriptPath, content);
        Assert.DoesNotContain("# Old Summary", content);
    }
}