using FarmmapsApi.Models;
using FarmmapsApi.Services;
using FarmMapsBlight.Models;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using static FarmmapsApi.Extensions;
using static FarmmapsApiSamples.Constants;

namespace FarmMapsBlight
{
    public class BlightService
    {
        private readonly ILogger<BlightService> _logger;
        private readonly FarmmapsApiService _farmmapsApiService;
        private readonly GeneralService _generalService;

        public BlightService(ILogger<BlightService> logger, FarmmapsApiService farmmapsApiService,
            GeneralService generalService)
        {
            _logger = logger;
            _farmmapsApiService = farmmapsApiService;
            _generalService = generalService;
        }

        public async Task<Item> CreateAdvice(Item cropfieldItem)
        {
            var taskRequest = new TaskRequest()
            {
                TaskType = "vnd.farmmaps.task.blight"
            };

            var fungicide1 = "{\"ai1\": \"propamocarb\", \"ai2\": \"fluopicolide\", \"ai3\": \"cymoxanil\", \"code\": \"infinito12curz\", \"name\": \"infinito 1,2 l + curzate partner 0,2 kg\", \"maxdose\": \"1\", \"mindose\": \"1\", \"safedays\": \"14\", \"emergence\": true, \"newgrowth\": \"1\", \"contentai1\": \"525.2\", \"contentai2\": \"62.5\", \"contentai3\": \"600\", \"fastgrowth\": true, \"contentunit\": \"l/ha + kg/ha\", \"rainfastness\": \"2.5\", \"tuberfilling\": true, \"aidescription\": \"(propamocarb + fluopicolide) 1.2 l/ha + cymoxanil 0.2 kg/ha\", \"curativescore\": \"2\", \"dryingtimemax\": \"2\", \"dryingtimemin\": \"2\", \"vracompatible\": false, \"maxapplications\": \"4\", \"preventivescore\": \"3\", \"recommendeddose\": \"1\", \"tuberprotection\": \"3.3\", \"eradicativescore\": \"2\", \"earlytubersetting\": true, \"protectioncategory\": \"2\", \"applicationrateunit\": null, \"ctgbregistrationnumber\": \"12927 n + 12755 n\"}";
            var fungicide2 = "{\"ai1\": \"fluazinam\", \"ai2\": \"cymoxanil\", \"ai3\": null, \"code\": \"kunshi\", \"name\": \"kunshi\", \"maxdose\": \"0.5\", \"mindose\": \"0.4\", \"safedays\": \"1\", \"emergence\": false, \"newgrowth\": \"1\", \"contentai1\": \"375\", \"contentai2\": \"250\", \"contentai3\": \"0\", \"fastgrowth\": true, \"contentunit\": \"g/kg\", \"rainfastness\": \"2.5\", \"tuberfilling\": false, \"aidescription\": \"(fluazinam + cymoxanil) 0.5 kg/ha\", \"curativescore\": \"2\", \"dryingtimemax\": \"2\", \"dryingtimemin\": \"1\", \"vracompatible\": true, \"maxapplications\": \"5\", \"preventivescore\": \"2.9\", \"recommendeddose\": \"0.5\", \"tuberprotection\": \"3.3\", \"eradicativescore\": \"1\", \"earlytubersetting\": false, \"protectioncategory\": \"1\", \"applicationrateunit\": \"kg/ha\", \"ctgbregistrationnumber\": \"14371 n\"}";

            List<Spray> sprays = new List<Spray>();
            sprays.Add(new Spray() { fungicide = JsonConvert.DeserializeObject<Fungicide>(fungicide1), sprayTime = new DateTime(2020, 9, 1), dose = 0.6, isVRA = false });
            sprays.Add(new Spray() { fungicide = JsonConvert.DeserializeObject<Fungicide>(fungicide2), sprayTime = new DateTime(2020, 9, 1), dose = 0.6, isVRA = false });

            taskRequest.attributes["sprays"] = JsonConvert.SerializeObject(sprays);

            var taskCode = await _farmmapsApiService.QueueTaskAsync(cropfieldItem.Code, taskRequest);
            await PollTask(TimeSpan.FromSeconds(3), async (tokenSource) =>
            {
                var itemTaskStatus = await _farmmapsApiService.GetTaskStatusAsync(cropfieldItem.Code, taskCode);
                _logger.LogInformation($"Checking blight task status: { itemTaskStatus.State}");
                if (itemTaskStatus.IsFinished)
                    tokenSource.Cancel();
            });

            var itemTask = await _farmmapsApiService.GetTaskStatusAsync(cropfieldItem.Code, taskCode);
            if (itemTask.State == ItemTaskState.Error)
            {
                _logger.LogError($"Something went wrong with task execution: {itemTask.Message}");
                return null;
            }

            var itemName = $"Blight";
            var blightAdviceItem = await _generalService.FindChildItemAsync(cropfieldItem.Code,
                BLIGHT_ITEMTYPE, itemName);

            // incorrect filter task is finished after updating

            // i => i.Updated >= itemTask.Finished && i.Name.ToLower().Contains(itemName.ToLower())
            if (blightAdviceItem == null)
            {
                _logger.LogError("Could not find the blight item under cropfield");
                return null;
            }

            return blightAdviceItem;
        }
    }
}