using System.ComponentModel;
using ModelContextProtocol.Protocol;
using ModelContextProtocol.Server;

namespace Novelly.Mcp.Tools;

[McpServerToolType]
public static class NovelTools
{
    [McpServerTool(Name = "list_novels")]
    [Description("List every novel, with counts of characters, chapters and drafted words. "
                 + "Start here to find the novel id everything else needs.")]
    public static Task<CallToolResult> ListNovels(NovelApiClient api, CancellationToken ct) =>
        api.GetAsync("/api/novels", ct);

    [McpServerTool(Name = "get_novel_brief")]
    [Description("Read a novel's title, author, genre, logline, synopsis, notes and word-count target.")]
    public static Task<CallToolResult> GetNovel(
        NovelApiClient api,
        [Description("The novel's id.")] Guid novelId,
        CancellationToken ct) =>
        api.GetAsync($"/api/novels/{novelId}", ct);

    [McpServerTool(Name = "create_novel")]
    [Description("Create a new novel.")]
    public static Task<CallToolResult> CreateNovel(
        NovelApiClient api,
        [Description("Working title.")] string title,
        CancellationToken ct,
        [Description("Author name.")] string? author = null,
        [Description("Genre or category.")] string? genre = null,
        [Description("One-sentence pitch.")] string? logline = null,
        [Description("Paragraph-length summary of the whole book.")] string? synopsis = null,
        [Description("Free-form notes on theme, tone, comparable titles.")] string? notes = null,
        [Description("Target manuscript length in words.")] int? targetWordCount = null) =>
        api.PostAsync("/api/novels", new { title, author, genre, logline, synopsis, notes, targetWordCount }, ct);

    [McpServerTool(Name = "update_novel_brief")]
    [Description("Revise a novel's top-level fields. Only the fields you supply change; "
                 + "pass an empty string to clear one.")]
    public static Task<CallToolResult> UpdateNovel(
        NovelApiClient api,
        [Description("The novel's id.")] Guid novelId,
        CancellationToken ct,
        [Description("New title.")] string? title = null,
        [Description("Author name.")] string? author = null,
        [Description("Genre or category.")] string? genre = null,
        [Description("One-sentence pitch.")] string? logline = null,
        [Description("Paragraph-length summary of the whole book.")] string? synopsis = null,
        [Description("Free-form notes on theme, tone, comparable titles.")] string? notes = null,
        [Description("Target manuscript length in words.")] int? targetWordCount = null) =>
        api.PatchAsync($"/api/novels/{novelId}",
            new { title, author, genre, logline, synopsis, notes, targetWordCount }, ct);
}