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

namespace MeetingAssistant.Tests;

public sealed class MeetingNoteStoreTests
{
    [Fact]
    public async Task StoreWritesTemplateFrontmatterAndReadsUserNotesBody()
    {
        var (vaultRoot, store) = CreateStore();
        var note = MeetingNoteTemplate.Create(
            title: "Leadership Sync",
            startTime: DateTimeOffset.Parse("2026-05-19T10:00:00+02:00"),
            endTime: DateTimeOffset.Parse("2026-05-19T10:30:00+02:00"),
            attendees:
            [
                "Mike <m.ike@ibm.com>",
                "Ada"
            ],
            projects:
            [
                "Meeting Assistant",
                "Alaric"
            ],
            transcriptPath: Path.Combine(vaultRoot, "Meetings", "Transcripts", "20260519-transcript.md"),
            assistantContextPath: Path.Combine(vaultRoot, "Meetings", "Assistant Context", "20260519-context.md"),
            summaryPath: Path.Combine(vaultRoot, "Meetings", "Summaries", "20260519-summary.md"),
            userNotes: "Discuss rollout risks.");

        var saved = await store.SaveAsync(note, CancellationToken.None);
        var content = await File.ReadAllTextAsync(saved.Path);
        var loaded = await store.ReadAsync(saved.Path, CancellationToken.None);

        Assert.EndsWith(".md", saved.Path, StringComparison.Ordinal);
        Assert.Contains("attendees:", content);
        Assert.Contains("- Mike <m.ike@ibm.com>", content);
        Assert.Contains("- Ada", content);
        Assert.Contains("projects:", content);
        Assert.Contains("- Meeting Assistant", content);
        Assert.DoesNotContain("purpose:", content);
        Assert.Contains("start_time: \"2026-05-19T10:00:00.0000000+02:00\"", content);
        Assert.Contains("end_time: \"2026-05-19T10:30:00.0000000+02:00\"", content);
        Assert.Contains("transcript: \"[[../Transcripts/20260519-transcript|Transcript]]\"", content);
        Assert.Contains("assistant_context: \"[[../Assistant Context/20260519-context|Assistant Context]]\"", content);
        Assert.Contains("summary: \"[[../Summaries/20260519-summary|Summary]]\"", content);
        Assert.DoesNotContain("decisions:", content);
        Assert.DoesNotContain("next_steps:", content);
        Assert.Equal("Discuss rollout risks.", loaded.UserNotes);
        Assert.Equal(["Mike <m.ike@ibm.com>", "Ada"], loaded.Frontmatter.Attendees);
        Assert.Equal(["Meeting Assistant", "Alaric"], loaded.Frontmatter.Projects);
        Assert.Equal(DateTimeOffset.Parse("2026-05-19T10:00:00+02:00"), loaded.Frontmatter.StartTime);
        Assert.Equal(DateTimeOffset.Parse("2026-05-19T10:30:00+02:00"), loaded.Frontmatter.EndTime);
        Assert.Equal("[[../Transcripts/20260519-transcript|Transcript]]", loaded.Frontmatter.Transcript);
        Assert.Equal("[[../Assistant Context/20260519-context|Assistant Context]]", loaded.Frontmatter.AssistantContext);
        Assert.Equal("[[../Summaries/20260519-summary|Summary]]", loaded.Frontmatter.Summary);
    }

    [Fact]
    public async Task FrontmatterUpdatePreservesExistingUserNotesBody()
    {
        var (vaultRoot, store) = CreateStore();
        var userNotes = """
            ## User notes

            - First point
            - Second point

            ```text
            Keep this block exactly.
            ```

            """;
        var saved = await store.SaveAsync(
            MeetingNoteTemplate.Create(
                title: "Body Preservation",
                attendees: [],
                projects: [],
                transcriptPath: Path.Combine(vaultRoot, "Meetings", "Transcripts", "20260519-transcript.md"),
                assistantContextPath: Path.Combine(vaultRoot, "Meetings", "Assistant Context", "20260519-context.md"),
                summaryPath: Path.Combine(vaultRoot, "Meetings", "Summaries", "20260519-summary.md"),
                userNotes: userNotes),
            CancellationToken.None);

        var loaded = await store.ReadAsync(saved.Path, CancellationToken.None);
        loaded.Frontmatter.Title = "Updated title";
        await store.SaveAsync(loaded, CancellationToken.None);
        var reloaded = await store.ReadAsync(saved.Path, CancellationToken.None);

        Assert.Equal("Updated title", reloaded.Frontmatter.Title);
        Assert.Equal(userNotes, reloaded.UserNotes);
    }

    [Fact]
    public void ActionLinkEscapesSummaryFileName()
    {
        var link = MeetingNoteActionLinks.CreateSummaryRetryLink(
            "http://localhost:5090/",
            "C:\\Vault\\Meetings\\Summaries\\summary with spaces.md");

        Assert.Equal(
            "[Retry summary generation](http://localhost:5090/meetings/summary/retry?summaryPath=summary%20with%20spaces.md)",
            link);
    }

    private static (string VaultRoot, MarkdownMeetingNoteStore Store) CreateStore()
    {
        var vaultRoot = Path.Combine(Path.GetTempPath(), "meeting-assistant-tests", Guid.NewGuid().ToString("N"));
        var store = new MarkdownMeetingNoteStore(
            Options.Create(new MeetingAssistantOptions
            {
                Vault = new VaultOptions
                {
                    MeetingNotesFolder = Path.Combine(vaultRoot, "Meetings", "Notes"),
                    TranscriptsFolder = Path.Combine(vaultRoot, "Meetings", "Transcripts"),
                    AssistantContextFolder = Path.Combine(vaultRoot, "Meetings", "Assistant Context"),
                    SummariesFolder = Path.Combine(vaultRoot, "Meetings", "Summaries"),
                    ProjectsFolder = Path.Combine(vaultRoot, "Projects"),
                    DictationWordsPath = Path.Combine(vaultRoot, "Meetings", "dictation-words.md")
                }
            }),
            NullLogger<MarkdownMeetingNoteStore>.Instance);

        return (vaultRoot, store);
    }
}