using AsbCloudApp.Data.ProcessMapPlan;
using AsbCloudApp.Repositories;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using System.Collections.Generic;
using System.Threading.Tasks;
using System.Threading;
using Microsoft.AspNetCore.Http;
using AsbCloudApp.Exceptions;
using AsbCloudApp.Requests;
using System;
using System.IO;
using AsbCloudApp.Services;
using System.Linq;
using AsbCloudApp.Data;
using AsbCloudApp.Requests.ParserOptions;
using AsbCloudInfrastructure.Services.Parser;

namespace AsbCloudWebApi.Controllers.ProcessMapPlan;

/// <summary>
/// РТК план
/// </summary>
[ApiController]
[Route("api/well/{idWell}/[controller]")]
[Authorize]
public abstract class ProcessMapPlanBaseController<TDto> : ControllerBase
	where TDto : ProcessMapPlanBaseDto
{
	private readonly IChangeLogRepository<TDto, ProcessMapPlanBaseRequestWithWell> repository;
	private readonly IWellService wellService;
	private readonly ParserExcelService<TDto> parserService;
	
	protected ProcessMapPlanBaseController(IChangeLogRepository<TDto, ProcessMapPlanBaseRequestWithWell> repository,
		IWellService wellService,
		ParserExcelService<TDto> parserService)
	{
		this.repository = repository;
		this.wellService = wellService;
		this.parserService = parserService;
	}
	
	protected abstract string TemplateFileName { get; }

	/// <summary>
    /// Добавление
    /// </summary>
    /// <param name="idWell"></param>
    /// <param name="dtos"></param>
    /// <param name="token"></param>
    /// <returns></returns>
    [HttpPost]
    [ProducesResponseType(typeof(int), StatusCodes.Status200OK)]
    [ProducesResponseType(typeof(ValidationProblemDetails), StatusCodes.Status400BadRequest)]
    public async Task<IActionResult> InsertRange([FromRoute] int idWell, IEnumerable<TDto> dtos, CancellationToken token)
    {
        if (idWell == 0 || dtos.Any(d => d.IdWell != idWell))
            return this.ValidationBadRequest(nameof(dtos), "all dtos should contain same idWell");

        var idUser = await AssertUserHasAccessToWell(idWell, token);
        var result = await repository.InsertRange(idUser, dtos, token);
        return Ok(result);
    }

    /// <summary>
    /// Удалить все по скважине и добавить новые
    /// </summary>
    /// <param name="idWell"></param>
    /// <param name="dtos"></param>
    /// <param name="token"></param>
    /// <returns></returns>
    [HttpPost("replace")]
    [ProducesResponseType(typeof(int), StatusCodes.Status200OK)]
    [ProducesResponseType(typeof(ValidationProblemDetails), StatusCodes.Status400BadRequest)]
    public async Task<IActionResult> ClearAndInsertRange([FromRoute] int idWell, IEnumerable<TDto> dtos, CancellationToken token)
    {
        if (idWell == 0 || dtos.Any(d => d.IdWell != idWell))
            return this.ValidationBadRequest(nameof(dtos), "all dtos should contain same idWell");

        var idUser = await AssertUserHasAccessToWell(idWell, token);

        var request = new ProcessMapPlanBaseRequestWithWell(idWell);
        var result = await repository.ClearAndInsertRange(idUser, request, dtos, token);
        return Ok(result);
    }

    /// <summary>
    /// Удаление
    /// </summary>
    /// <param name="idWell"></param>
    /// <param name="ids"></param>
    /// <param name="token"></param>
    /// <returns></returns>
    [HttpDelete]
    [ProducesResponseType(typeof(int), StatusCodes.Status200OK)]
    [ProducesResponseType(typeof(ValidationProblemDetails), StatusCodes.Status400BadRequest)]
    public async Task<IActionResult> DeleteRange([FromRoute]int idWell, IEnumerable<int> ids, CancellationToken token)
    {
        var idUser = await AssertUserHasAccessToWell(idWell, token);

        var result = await repository.DeleteRange(idUser, ids, token);
        return Ok(result);
    }

    /// <summary>
    /// Очистка
    /// </summary>
    /// <param name="idWell"></param>
    /// <param name="token"></param>
    /// <returns></returns>
    [HttpDelete("clear")]
    [ProducesResponseType(typeof(int), StatusCodes.Status200OK)]
    [ProducesResponseType(typeof(ValidationProblemDetails), StatusCodes.Status400BadRequest)]
    public async Task<IActionResult> Clear([FromRoute] int idWell, CancellationToken token)
    {
        var idUser = await AssertUserHasAccessToWell(idWell, token);

        var request = new ProcessMapPlanBaseRequestWithWell(idWell);
        var result = await repository.Clear(idUser, request, token);
        return Ok(result);
    }

    /// <summary>
    /// Получение
    /// </summary>
    /// <param name="idWell"></param>
    /// <param name="request"></param>
    /// <param name="token"></param>
    /// <returns></returns>
    [HttpGet]
    [ProducesResponseType(StatusCodes.Status200OK)]
    [ProducesResponseType(typeof(ValidationProblemDetails), StatusCodes.Status400BadRequest)]
    public async Task<ActionResult<IEnumerable<TDto>>> Get([FromRoute] int idWell, [FromQuery]ProcessMapPlanBaseRequest request, CancellationToken token)
    {
        await AssertUserHasAccessToWell(idWell, token);

        var serviceRequest = new ProcessMapPlanBaseRequestWithWell(request, idWell);
        var result = await repository.Get(serviceRequest, token);
        return Ok(result);
    }

    /// <summary>
    /// Изменения за определенную дату
    /// </summary>
    /// <param name="idWell"></param>
    /// <param name="date"></param>
    /// <param name="token"></param>
    /// <returns></returns>
    [HttpGet("changeLog")]
    [ProducesResponseType(StatusCodes.Status200OK)]
    [ProducesResponseType(typeof(ValidationProblemDetails), StatusCodes.Status400BadRequest)]
    public async Task<ActionResult<IEnumerable<TDto>>> GetChangeLog([FromRoute] int idWell, [FromQuery] DateOnly? date, CancellationToken token) 
    {
        await AssertUserHasAccessToWell(idWell, token);

        var serviceRequest = new ProcessMapPlanBaseRequestWithWell(idWell);
        var result = await repository.GetChangeLog(serviceRequest, date, token);
        return Ok(result);
    }

    /// <summary>
    /// Даты за которые есть изменения
    /// </summary>
    /// <param name="idWell"></param>
    /// <param name="token"></param>
    /// <returns></returns>
    [HttpGet("dates")]
    [ProducesResponseType(StatusCodes.Status200OK)]
    [ProducesResponseType(typeof(ValidationProblemDetails), StatusCodes.Status400BadRequest)]
    public async Task<ActionResult<IEnumerable<DateOnly>>> GetDatesChange([FromRoute] int idWell, CancellationToken token)
    {
        await AssertUserHasAccessToWell(idWell, token);

        var serviceRequest = new ProcessMapPlanBaseRequestWithWell(idWell);
        var result = await repository.GetDatesChange(serviceRequest, token);
        return Ok(result);
    }

    /// <summary>
    /// Редактирование или добавление [для пакетного редактирования]
    /// </summary>
    /// <param name="idWell"></param>
    /// <param name="dtos"></param>
    /// <param name="token"></param>
    /// <returns></returns>
    [HttpPut()]
    [ProducesResponseType(typeof(int), StatusCodes.Status200OK)]
    [ProducesResponseType(typeof(ValidationProblemDetails), StatusCodes.Status400BadRequest)]
    public async Task<IActionResult> UpdateOrInsertRange([FromRoute] int idWell, IEnumerable<TDto> dtos, CancellationToken token)
    {
        var first = dtos.FirstOrDefault();
        if (first is null)
            return NoContent();

        if (idWell == 0 || dtos.Any(d => d.IdWell != idWell))
            return this.ValidationBadRequest(nameof(dtos), "all dtos should contain same idWell");

        var idUser = await AssertUserHasAccessToWell(idWell, token);

        var result = await repository.UpdateOrInsertRange(idUser, dtos, token);
        return Ok(result);
    }
	
	/// <summary>
	/// Импорт РТК из excel (xlsx) файла
	/// </summary>
	/// <param name="idWell"></param>
	/// <param name="files"></param>
	/// <param name="token"></param>
	/// <returns></returns>
	[HttpPost("parse")]
	[ProducesResponseType(StatusCodes.Status200OK)]
	[ProducesResponseType(typeof(ValidationProblemDetails), StatusCodes.Status400BadRequest)]
	public async Task<ActionResult<ParserResultDto<TDto>>> Parse(int idWell,
		[FromForm] IFormFileCollection files,
		CancellationToken token)
	{
		await AssertUserHasAccessToWell(idWell, token);

		var stream = files.GetExcelFile();

		try
		{
			var dto = parserService.Parse(stream, IParserOptionsRequest.Empty());
			return Ok(dto);
		}
		catch (FileFormatException ex)
		{
			return this.ValidationBadRequest(nameof(files), ex.Message);
		}
	}

	/// <summary>
	/// Получение шаблона для заполнения РТК
	/// </summary>
	/// <returns></returns>
	[HttpGet("template")]
	[AllowAnonymous]
	[ProducesResponseType(typeof(PhysicalFileResult), (int)System.Net.HttpStatusCode.OK, "application/octet-stream")]
	[ProducesResponseType(StatusCodes.Status204NoContent)]
	public IActionResult GetTemplate()
	{
		var stream = parserService.GetTemplateFile();
		return File(stream, "application/octet-stream", TemplateFileName);
	}

    /// <summary>
    /// returns user id, if he has access to well
    /// </summary>
    /// <param name="idWell"></param>
    /// <param name="token"></param>
    /// <returns></returns>
    /// <exception cref="ForbidException"></exception>
    private async Task<int> AssertUserHasAccessToWell(int idWell, CancellationToken token)
    {
        var idUser = GetUserId();
        var idCompany = User.GetCompanyId();

        if (!idCompany.HasValue)
            throw new ForbidException("Нет доступа к скважине");

        if (!await wellService.IsCompanyInvolvedInWellAsync(idCompany.Value, idWell, token))
            throw new ForbidException("Нет доступа к скважине");
        return idUser;
    }

    /// <summary>
    /// returns user id or throw
    /// </summary>
    /// <returns></returns>
    /// <exception cref="ForbidException"></exception>
    private int GetUserId()
    {
        var idUser = User.GetUserId() ?? throw new ForbidException("Неизвестный пользователь");
        return idUser;
    }
}