//
//  DetailedSnippetView.swift
//  iTexSnip
//
//  Created by Navan Chauhan on 10/21/24.
//

import SwiftUI
import LaTeXSwiftUI

struct DetailedSnippetView: View {
    @Environment(\.modelContext) var modelContext
    @Environment(\.dismiss) private var dismiss
    
    @State var showOriginal = false
    
    
    var snippet: ImageSnippet
    var body: some View {
        VStack {
            HStack {
                Toggle("Show Original", isOn: $showOriginal)
                    .toggleStyle(.switch)
                    .padding()
                Spacer()
                HStack {
                    Button {
                        if snippet.rating == true {
                            updateRating(nil)
                        } else {
                            updateRating(true)
                        }
                    } label: {
                        if snippet.rating == true {
                            Image(systemName: "hand.thumbsup")
                                .foregroundStyle(.green)
                                .imageScale(.large)
                        } else {
                            Image(systemName: "hand.thumbsup")
                                .imageScale(.large)
                        }
                    }.buttonStyle(PlainButtonStyle())
                    
                    Button {
                        if snippet.rating == false {
                            updateRating(nil)
                        } else {
                            updateRating(false)
                        }
                    } label: {
                        if snippet.rating == false {
                            Image(systemName: "hand.thumbsdown")
                                .foregroundStyle(.red)
                                .imageScale(.large)
                        } else {
                            Image(systemName: "hand.thumbsdown")
                                .imageScale(.large)
                        }
                    }.buttonStyle(PlainButtonStyle())
                    
                    Button(role: .destructive) {
                        withAnimation {
                            modelContext.delete(snippet)
                            do {
                                try modelContext.save()
                                dismiss()
                            } catch {
                                print("Failed to delete snippet: \(error)")
                            }
                        }
                    } label: {
                        Image(systemName: "trash")
                            .imageScale(.large)
                    }
                    .padding()
                    .buttonStyle(PlainButtonStyle())
               }.padding()
            }
            if (showOriginal) {
                HStack {
                    Spacer()
                    Image(nsImage: NSImage(data: snippet.image)!)
                        .resizable()
                        .clipped()
                        .cornerRadius(10)
                        .scaledToFit()
                        .frame(height: 100)
                    Spacer()
                }.padding()
            }
            HStack {
                Spacer()
                LaTeXEquationView(equation: snippet.transcribedText!)
                    .clipped()
                    .scaledToFit()
                    .frame(height: 100)
                Spacer()
            }
            GeometryReader { geometry in
                HStack {
                    Button {
                        print("Should Copy")
                    } label: {
                        Image(systemName: "document.on.clipboard")
                    }
                        ScrollView(.horizontal) {
                            Text(snippet.transcribedText!)
                                .frame(height: 50)
                                .textSelection(.enabled)
                        }
                        .frame(width: geometry.size.width * 0.8)
                        .border(Color.red)
                    
                    Spacer()
                    Button {
                        print("Should Copy")
                    } label: {
                        Image(systemName: "document.on.clipboard")
                    }
                }
            }
            Spacer()
        }
    }
    
    func updateRating(_ rating: Bool?) {
        withAnimation {
            self.snippet.rate(rating)
            do {
                try modelContext.save()
            } catch {
                print("Error saving rating: \(error)")
            }
        }
    }
}

struct LaTeXEquationView: View {
    var equation: String
    var body: some View {
        LaTeX(equation)
            .parsingMode(.all)
            .font(.system(size: 28, weight: .bold))
    }
}