using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Text.Json;
using System.Threading;
using System.Threading.Tasks;
using DocumentFormat.OpenXml;
using DocumentFormat.OpenXml.Drawing;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Presentation;

namespace AxCopilot.Services.Agent;

public class PptxSkill : IAgentTool
{
	private static readonly Dictionary<string, (string Primary, string Accent, string TextDark, string TextLight, string Bg)> Themes = new Dictionary<string, (string, string, string, string, string)>
	{
		["professional"] = ("2B579A", "4B5EFC", "1A1A2E", "FFFFFF", "FFFFFF"),
		["modern"] = ("0D9488", "06B6D4", "1A1A2E", "FFFFFF", "FFFFFF"),
		["dark"] = ("374151", "6366F1", "F9FAFB", "FFFFFF", "1F2937"),
		["minimal"] = ("6B7280", "3B82F6", "111827", "FFFFFF", "FAFAFA")
	};

	public string Name => "pptx_create";

	public string Description => "Create a PowerPoint (.pptx) presentation. Supports slide layouts: title (title+subtitle), content (title+body text), two_column (title+left+right), table (title+headers+rows), blank. No external runtime required (native OpenXML).";

	public ToolParameterSchema Parameters
	{
		get
		{
			ToolParameterSchema toolParameterSchema = new ToolParameterSchema();
			Dictionary<string, ToolProperty> obj = new Dictionary<string, ToolProperty>
			{
				["path"] = new ToolProperty
				{
					Type = "string",
					Description = "Output file path (.pptx). Relative to work folder."
				},
				["title"] = new ToolProperty
				{
					Type = "string",
					Description = "Presentation title (used on first slide if no explicit title slide)."
				},
				["slides"] = new ToolProperty
				{
					Type = "array",
					Description = "Array of slide objects. Each slide: {\"layout\": \"title|content|two_column|table|blank\", \"title\": \"Slide Title\", \"subtitle\": \"...\", \"body\": \"...\", \"left\": \"...\", \"right\": \"...\", \"headers\": [...], \"rows\": [[...]], \"notes\": \"Speaker notes\"}",
					Items = new ToolProperty
					{
						Type = "object"
					}
				}
			};
			ToolProperty obj2 = new ToolProperty
			{
				Type = "string",
				Description = "Color theme: professional (blue), modern (teal), dark (dark gray), minimal (light). Default: professional"
			};
			int num = 4;
			List<string> list = new List<string>(num);
			CollectionsMarshal.SetCount(list, num);
			Span<string> span = CollectionsMarshal.AsSpan(list);
			span[0] = "professional";
			span[1] = "modern";
			span[2] = "dark";
			span[3] = "minimal";
			obj2.Enum = list;
			obj["theme"] = obj2;
			toolParameterSchema.Properties = obj;
			num = 2;
			List<string> list2 = new List<string>(num);
			CollectionsMarshal.SetCount(list2, num);
			Span<string> span2 = CollectionsMarshal.AsSpan(list2);
			span2[0] = "path";
			span2[1] = "slides";
			toolParameterSchema.Required = list2;
			return toolParameterSchema;
		}
	}

	public async Task<ToolResult> ExecuteAsync(JsonElement args, AgentContext context, CancellationToken ct)
	{
		string path = args.GetProperty("path").GetString() ?? "";
		if (!args.TryGetProperty("title", out var tt))
		{
		}
		else if (tt.GetString() == null)
		{
		}
		JsonElement th;
		string theme = (args.TryGetProperty("theme", out th) ? (th.GetString() ?? "professional") : "professional");
		if (!args.TryGetProperty("slides", out var slidesEl) || slidesEl.ValueKind != JsonValueKind.Array)
		{
			return ToolResult.Fail("slides 배열이 필요합니다.");
		}
		string fullPath = FileReadTool.ResolvePath(path, context.WorkFolder);
		if (context.ActiveTab == "Cowork")
		{
			fullPath = AgentContext.EnsureTimestampedPath(fullPath);
		}
		if (!fullPath.EndsWith(".pptx", StringComparison.OrdinalIgnoreCase))
		{
			fullPath += ".pptx";
		}
		if (!context.IsPathAllowed(fullPath))
		{
			return ToolResult.Fail("경로 접근 차단: " + fullPath);
		}
		if (!(await context.CheckWritePermissionAsync(Name, fullPath)))
		{
			return ToolResult.Fail("쓰기 권한 거부: " + fullPath);
		}
		string dir = System.IO.Path.GetDirectoryName(fullPath);
		if (!string.IsNullOrEmpty(dir))
		{
			Directory.CreateDirectory(dir);
		}
		if (!Themes.TryGetValue(theme, out var colors))
		{
			colors = Themes["professional"];
		}
		try
		{
			using PresentationDocument pres = PresentationDocument.Create(fullPath, PresentationDocumentType.Presentation);
			PresentationPart presPart = pres.AddPresentationPart();
			presPart.Presentation = new Presentation();
			presPart.Presentation.SlideIdList = new SlideIdList();
			presPart.Presentation.SlideSize = new SlideSize
			{
				Cx = 12192000,
				Cy = 6858000
			};
			presPart.Presentation.NotesSize = new NotesSize
			{
				Cx = 6858000L,
				Cy = 9144000L
			};
			uint slideId = 256u;
			int slideCount = 0;
			foreach (JsonElement slideEl in slidesEl.EnumerateArray())
			{
				JsonElement lay;
				string layout = (slideEl.TryGetProperty("layout", out lay) ? (lay.GetString() ?? "content") : "content");
				JsonElement st;
				string slideTitle = (slideEl.TryGetProperty("title", out st) ? (st.GetString() ?? "") : "");
				JsonElement sub;
				string subtitle = (slideEl.TryGetProperty("subtitle", out sub) ? (sub.GetString() ?? "") : "");
				JsonElement bd;
				string body = (slideEl.TryGetProperty("body", out bd) ? (bd.GetString() ?? "") : "");
				JsonElement lf;
				string left = (slideEl.TryGetProperty("left", out lf) ? (lf.GetString() ?? "") : "");
				JsonElement rt;
				string right = (slideEl.TryGetProperty("right", out rt) ? (rt.GetString() ?? "") : "");
				if (!slideEl.TryGetProperty("notes", out var nt))
				{
				}
				else if (nt.GetString() == null)
				{
				}
				SlidePart slidePart = presPart.AddNewPart<SlidePart>();
				slidePart.Slide = new Slide(new CommonSlideData(new ShapeTree(new DocumentFormat.OpenXml.Presentation.NonVisualGroupShapeProperties(new DocumentFormat.OpenXml.Presentation.NonVisualDrawingProperties
				{
					Id = 1u,
					Name = ""
				}, new DocumentFormat.OpenXml.Presentation.NonVisualGroupShapeDrawingProperties(), new ApplicationNonVisualDrawingProperties()), new GroupShapeProperties(new TransformGroup()))));
				ShapeTree shapeTree = slidePart.Slide.CommonSlideData.ShapeTree;
				uint shapeId = 2u;
				switch (layout)
				{
				case "title":
					AddRectangle(shapeTree, ref shapeId, 0L, 0L, 12192000L, 6858000L, colors.Primary);
					AddTextBox(shapeTree, ref shapeId, 600000L, 2000000L, 10992000L, 1400000L, slideTitle, 3600, colors.TextLight, bold: true);
					if (!string.IsNullOrEmpty(subtitle))
					{
						AddTextBox(shapeTree, ref shapeId, 600000L, 3600000L, 10992000L, 800000L, subtitle, 2000, colors.TextLight, bold: false);
					}
					break;
				case "two_column":
					AddTextBox(shapeTree, ref shapeId, 600000L, 300000L, 10992000L, 800000L, slideTitle, 2800, colors.Primary, bold: true);
					AddTextBox(shapeTree, ref shapeId, 600000L, 1300000L, 5200000L, 5000000L, left, 1600, colors.TextDark, bold: false);
					AddTextBox(shapeTree, ref shapeId, 6400000L, 1300000L, 5200000L, 5000000L, right, 1600, colors.TextDark, bold: false);
					break;
				case "table":
				{
					AddTextBox(shapeTree, ref shapeId, 600000L, 300000L, 10992000L, 800000L, slideTitle, 2800, colors.Primary, bold: true);
					string tableText = FormatTableAsText(slideEl, colors);
					AddTextBox(shapeTree, ref shapeId, 600000L, 1300000L, 10992000L, 5000000L, tableText, 1400, colors.TextDark, bold: false);
					break;
				}
				default:
					AddTextBox(shapeTree, ref shapeId, 600000L, 300000L, 10992000L, 800000L, slideTitle, 2800, colors.Primary, bold: true);
					AddTextBox(shapeTree, ref shapeId, 600000L, 1300000L, 10992000L, 5000000L, body, 1600, colors.TextDark, bold: false);
					break;
				case "blank":
					break;
				}
				presPart.Presentation.SlideIdList.AppendChild(new SlideId
				{
					Id = slideId++,
					RelationshipId = presPart.GetIdOfPart(slidePart)
				});
				slideCount++;
				lay = default(JsonElement);
				st = default(JsonElement);
				sub = default(JsonElement);
				bd = default(JsonElement);
				lf = default(JsonElement);
				rt = default(JsonElement);
				nt = default(JsonElement);
			}
			presPart.Presentation.Save();
			return ToolResult.Ok($"✅ PPTX 생성 완료: {System.IO.Path.GetFileName(fullPath)} ({slideCount}슬라이드, 테마: {theme})", fullPath);
		}
		catch (Exception ex)
		{
			return ToolResult.Fail("PPTX 생성 실패: " + ex.Message);
		}
	}

	private static void AddTextBox(ShapeTree tree, ref uint id, long x, long y, long cx, long cy, string text, int fontSize, string color, bool bold)
	{
		DocumentFormat.OpenXml.Presentation.Shape shape = new DocumentFormat.OpenXml.Presentation.Shape();
		shape.NonVisualShapeProperties = new DocumentFormat.OpenXml.Presentation.NonVisualShapeProperties(new DocumentFormat.OpenXml.Presentation.NonVisualDrawingProperties
		{
			Id = id++,
			Name = $"TextBox{id}"
		}, new DocumentFormat.OpenXml.Presentation.NonVisualShapeDrawingProperties(new ShapeLocks
		{
			NoGrouping = true
		}), new ApplicationNonVisualDrawingProperties());
		shape.ShapeProperties = new DocumentFormat.OpenXml.Presentation.ShapeProperties(new Transform2D(new Offset
		{
			X = x,
			Y = y
		}, new Extents
		{
			Cx = cx,
			Cy = cy
		}), new PresetGeometry(new AdjustValueList())
		{
			Preset = ShapeTypeValues.Rectangle
		});
		DocumentFormat.OpenXml.Presentation.TextBody textBody = new DocumentFormat.OpenXml.Presentation.TextBody(new BodyProperties
		{
			Wrap = TextWrappingValues.Square
		}, new ListStyle());
		string[] array = text.Split('\n');
		string[] array2 = array;
		foreach (string text2 in array2)
		{
			Paragraph paragraph = new Paragraph();
			Run run = new Run();
			RunProperties runProperties = new RunProperties
			{
				Language = "ko-KR",
				FontSize = fontSize,
				Dirty = false
			};
			runProperties.AppendChild(new SolidFill(new RgbColorModelHex
			{
				Val = color
			}));
			if (bold)
			{
				runProperties.Bold = true;
			}
			run.AppendChild(runProperties);
			run.AppendChild(new DocumentFormat.OpenXml.Drawing.Text(text2));
			paragraph.AppendChild(run);
			textBody.AppendChild(paragraph);
		}
		shape.TextBody = textBody;
		tree.AppendChild(shape);
	}

	private static void AddRectangle(ShapeTree tree, ref uint id, long x, long y, long cx, long cy, string fillColor)
	{
		DocumentFormat.OpenXml.Presentation.Shape shape = new DocumentFormat.OpenXml.Presentation.Shape();
		shape.NonVisualShapeProperties = new DocumentFormat.OpenXml.Presentation.NonVisualShapeProperties(new DocumentFormat.OpenXml.Presentation.NonVisualDrawingProperties
		{
			Id = id++,
			Name = $"Rect{id}"
		}, new DocumentFormat.OpenXml.Presentation.NonVisualShapeDrawingProperties(), new ApplicationNonVisualDrawingProperties());
		shape.ShapeProperties = new DocumentFormat.OpenXml.Presentation.ShapeProperties(new Transform2D(new Offset
		{
			X = x,
			Y = y
		}, new Extents
		{
			Cx = cx,
			Cy = cy
		}), new PresetGeometry(new AdjustValueList())
		{
			Preset = ShapeTypeValues.Rectangle
		}, new SolidFill(new RgbColorModelHex
		{
			Val = fillColor
		}));
		tree.AppendChild(shape);
	}

	private static string FormatTableAsText(JsonElement slideEl, (string Primary, string Accent, string TextDark, string TextLight, string Bg) colors)
	{
		StringBuilder stringBuilder = new StringBuilder();
		if (slideEl.TryGetProperty("headers", out var value))
		{
			List<string> list = new List<string>();
			foreach (JsonElement item in value.EnumerateArray())
			{
				list.Add(item.GetString() ?? "");
			}
			stringBuilder.AppendLine(string.Join("  |  ", list));
			stringBuilder.AppendLine(new string('─', list.Sum((string h) => h.Length + 5)));
		}
		if (slideEl.TryGetProperty("rows", out var value2))
		{
			foreach (JsonElement item2 in value2.EnumerateArray())
			{
				List<string> list2 = new List<string>();
				foreach (JsonElement item3 in item2.EnumerateArray())
				{
					list2.Add(item3.GetString() ?? item3.ToString());
				}
				stringBuilder.AppendLine(string.Join("  |  ", list2));
			}
		}
		return stringBuilder.ToString();
	}
}