//
//  FuelEntryController.swift
//
//
//  Created by Bill Ryckman on 4/24/23.
//

import Vapor
import FluentKit

struct FuelEntryV2Controller: RouteCollection {
    func boot(routes: RoutesBuilder) throws {
        let fuelEntries = routes.grouped("fuel_entries")
        let tokenAuthMiddleware = Token.authenticator()
        let guardMiddleware = User.guardMiddleware()
        let tokenAuthGroup = fuelEntries.grouped(tokenAuthMiddleware, guardMiddleware)
        tokenAuthGroup.get(use: index)
        tokenAuthGroup.get("test", use: filtered)
//        fuelEntries.get("with-images", use: getAllEntriesWithImages)
        tokenAuthGroup.post(use: create)
        tokenAuthGroup.put( use: softdelete)
//        fuelEntries.post("upload-image", use: uploadImage)
        tokenAuthGroup.group(":fuelEntryID") { fuelEntry in
            fuelEntry.delete(use: delete)
        }
        
    }
    
    func index(req: Request) async throws -> [FuelEntry] {
        return try await FuelEntry.query(on: req.db).all()
    }
    
    struct filteredreturn: Content{
        var fuelentries: [FuelEntry]
        var pages: Int
    }
    
    struct dload: Content{
        var id: UUID
    }
    
    @Sendable
    func softdelete(req: Request) async throws -> Response {
        let ids = try req.content.decode([dload].self)
        var msg: [String] = []
        for id in ids {
            guard let fe = try await FuelEntry.find(id.id, on: req.db) else {
                msg.append("create error message for item")
                continue
            }
            fe.downloaded = true
            try await fe.save(on: req.db)
        }
        let response = Response(status: .ok, body: "good")
        return response
    }
    
    @Sendable
    func filtered(req: Request) async throws -> Response {
        
        var image: Bool
        var serial: String
        var tank: String
        let qstring = req.query
        if let qimage = try? qstring.get(Bool.self, at: "image"){
            image = qimage
        } else {
            image = false
        }
        if let qserial = try? qstring.get(String.self, at: "serial"){
            serial = qserial
        } else {
            serial = ""
        }
        if let qtank = try? qstring.get(String.self, at: "tank"){
            tank = qtank
        } else {
            tank = ""
        }
        
        var query = FuelEntry.query(on: req.db)
        if(image){
            query = query
                .field(\.$id)
                .field(\.$timestamp)
                .field(\.$userID)
                .field(\.$product)
                .field(\.$make)
                .field(\.$model)
                .field(\.$serialNumber)
                .field(\.$tankID)
                .field(\.$fuelAmount)
                .field(\.$fuelType)
                .field(\.$isOverride)
                .field(\.$latitude)
                .field(\.$longitude)
                .field(\.$image)
                .field(\.$downloaded)
                //.filter(\.$image != nil)
                
        } else {
            query = query
                .field(\.$id)
                .field(\.$timestamp)
                .field(\.$userID)
                .field(\.$product)
                .field(\.$make)
                .field(\.$model)
                .field(\.$serialNumber)
                .field(\.$tankID)
                .field(\.$fuelAmount)
                .field(\.$fuelType)
                .field(\.$isOverride)
                .field(\.$latitude)
                .field(\.$longitude)
                .field(\.$downloaded)
        }
        if(serial.count > 0){
            query = query
                .filter(\.$serialNumber == serial)
        }
        if(tank.count > 0){
            query = query
                .filter(\.$tankID == tank)
        }
        if(image){
            //query = query.filter(\.$image)
            let wimage = try await query.paginate(for: req).map{
                img in FuelEntry.wimage(id: img.id, timestamp: img.timestamp, userID: img.userID, latitude: img.latitude, longitutde: img.longitude, product: img.product, make: img.make, model: img.model, serialNumber: img.serialNumber, tankID: img.tankID, fuelAmount: img.fuelAmount, fuelType: img.fuelType, isOverride: img.isOverride, image: img.image == nil ? Data(): img.image, downloaded: img.downloaded == nil ? false : img.downloaded!)
            }
            return try await wimage.encodeResponse(for: req)
        } else {
            let woimage = try await query.paginate(for: req).map{
                img in FuelEntry.woimage(id: img.id, timestamp: img.timestamp, userID: img.userID, latitude: img.latitude, longitutde: img.longitude, product: img.product, make: img.make, model: img.model, serialNumber: img.serialNumber, tankID: img.tankID, fuelAmount: img.fuelAmount, fuelType: img.fuelType, isOverride: img.isOverride, downloaded: img.downloaded == nil ? false : img.downloaded!)
            }
            return try await woimage.encodeResponse(for: req)
        }
//        let result = try await query.paginate(for: req)
//        return try await result.encodeResponse(for: req)
    }
    
//    func getAllEntriesWithImages(req: Request) async throws -> [FuelEntry] {
//        let fuelEntries = try await FuelEntry.query(on: req.db).all()
//        
//        for var fuelEntry in fuelEntries {
//            if let imagePath = fuelEntry.image {
//                let fileURL = URL(fileURLWithPath: imagePath)
//                if let imageData = try? Data(contentsOf: fileURL) {
//                    fuelEntry.imageData = imageData
//                }
//            }
//        }
//        return fuelEntries
//    }
    
    func create(req: Request) async throws -> [FuelEntry] {
        let fuelEntry = try req.content.decode([FuelEntry].self)
        try await fuelEntry.create(on: req.db)
        return fuelEntry
    }
    
    //Create with image file written to server storage instead of database
//    func create(req: Request) async throws -> [FuelEntry] {
//        let fuelEntries = try await req.content.decode([FuelEntry].self)
//        let directory = DirectoryConfiguration.detect().workingDirectory + "Images/"
//        
//        var updatedFuelEntries: [FuelEntry] = []
//        
//        for fuelEntry in fuelEntries {
//            let updatedFuelEntry = try await { () async throws -> FuelEntry in
//                var updatedFuelEntry = fuelEntry
//                
//                if let imageData = updatedFuelEntry.imageData {
//                    let imageFilename = "\(updatedFuelEntry.id!).png"
//                    let tempImageURL = URL(fileURLWithPath: directory + imageFilename)
//                    try await imageData.write(to: tempImageURL)
//                    updatedFuelEntry.image = tempImageURL.absoluteString
//                }
//                
//                do {
//                    _ = try await updatedFuelEntry.save(on: req.db)
//                    return updatedFuelEntry
//                } catch {
//                    throw Abort(.internalServerError, reason: "Error saving FuelEntry: \(error)")
//                }
//            }()
//            
//            updatedFuelEntries.append(updatedFuelEntry)
//        }
//        
//        return updatedFuelEntries
//    }
    
    func delete(req: Request) async throws -> HTTPStatus {
        guard let fuelEntry = try await FuelEntry.find(req.parameters.get("fuelEntryID"), on: req.db) else {
            throw Abort(.notFound)
        }
        try await fuelEntry.delete(on: req.db)
        return .noContent
    }
    
//    func uploadImage(req: Request) async throws -> FuelEntry {
//        let fuelEntryID: UUID = try req.parameters.require("id")
//        
//        let file = try await req.content.decode(File.self)
//        let filename = fuelEntryID.uuidString + ".png" // Generate a unique filename for the uploaded image
//        let directory = DirectoryConfiguration.detect().workingDirectory + "Images/"
//        
//        if let imageData = file.data.getData(at: 0, length: file.data.readableBytes) {
//            do {
//                try Data(imageData).write(to: URL(fileURLWithPath: directory + filename)) // Save the uploaded image to server
//            } catch {
//                throw Abort(.internalServerError, reason: "Failed to save image file")
//            }
//            
//            // Update FuelEntry model after saving the image
//            if let fuelEntry = try await FuelEntry.find(fuelEntryID, on: req.db) {
//                return fuelEntry
//            } else {
//                throw Abort(.notFound, reason: "FuelEntry not found")
//            }
//        } else {
//            throw Abort(.badRequest, reason: "Failed to extract image data")
//        }
//    }
}

struct PageRequest: Content {
    var page: Int
    var size: Int
    // Add any other properties needed for pagination
    
    init(page: Int, size: Int) {
        self.page = page
        self.size = size
    }
}