using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using ClosedXML.Excel;
using FastReport;
using FastReport.Export.Csv;
using FastReport.Export.Mht;
using FastReport.Export.OoXML;
using FastReport.Export.Pdf;
using Microsoft.AspNetCore.Mvc;
using rmutr_report.Models;
using Swashbuckle.AspNetCore.Annotations;

namespace rmutr_report.Controllers
{
    [SwaggerTag("สำหรับรายงานผลการดำเนินงานโครงการ")]
    public class AgencyReport : Controller
    {
        public readonly Setting _setting;

        public AgencyReport(Setting setting)
        {
            this._setting = setting;
        }

        [HttpPost, Route("reports/agency_result_report/{type}")]
        [ApiExplorerSettings(GroupName = "reports")]
        public IActionResult GetAgencyReport([FromRoute] string type, [FromBody] List<agency_report> agencyReports)
        {
            if (agencyReports == null || agencyReports.Count == 0)
            {
                return BadRequest("Agency reports cannot be null or empty.");
            }

            foreach (var agencyReport in agencyReports)
            {
                if (agencyReport == null)
                {
                    continue;
                }

                agencyReport.startdate = agencyReport.start_date?.ToString("dd MMMM yyyy", 
                    CultureInfo.CreateSpecificCulture("th-TH")) ?? "";

                agencyReport.enddate = agencyReport.end_date?.ToString("dd MMMM yyyy", 
                    CultureInfo.CreateSpecificCulture("th-TH")) ?? "";

                agencyReport.bool_11_1_text = agencyReport.bool_11_1 == true ? "X" : "";
                agencyReport.bool_11_2_text = agencyReport.bool_11_2 == true ? "X" : "";
                agencyReport.bool_11_3_text = agencyReport.bool_11_3 == true ? "X" : "";

                agencyReport.text_13_1 = agencyReport.bool_13_1 == true ? "X" : "";
                agencyReport.text_13_2 = agencyReport.bool_13_2 == true ? "X" : "";
                agencyReport.text_13_3 = agencyReport.bool_13_3 == true ? "X" : "";
                agencyReport.text_13_4 = agencyReport.bool_13_4 == true ? "X" : "";
                agencyReport.text_13_5 = agencyReport.bool_13_5 == true ? "X" : "";
                agencyReport.text_13_6 = agencyReport.bool_13_6 == true ? "X" : "";
                agencyReport.text_13_7 = agencyReport.bool_13_7 == true ? "X" : "";

                agencyReport.text_25_1 = agencyReport.bool_25_1 == true ? "X" : "";
                agencyReport.text_25_2 = agencyReport.bool_25_2 == true ? "X" : "";
            }

            if (_setting == null || string.IsNullOrEmpty(_setting.report_path))
            {
                return StatusCode(500, "Report settings are not configured.");
            }

            Report report = new Report();
            try
            {
                report.Load(_setting.report_path + "agency_report.frx");
                report.RegisterData(agencyReports, "agency_report");
                report.Prepare();
            }
            catch (Exception ex)
            {
                return StatusCode(500, $"Report generation failed: {ex.Message}");
            }

            MemoryStream stream = new MemoryStream();
            try
            {
                switch (type?.ToLower())
                {
                    case "pdf":
                        PDFExport pdf = new PDFExport();
                        report.Export(pdf, stream);
                        break;

                    case "xls":
                    case "xlsx":
                        Excel2007Export excel = new Excel2007Export();
                        report.Export(excel, stream);
                        break;

                    case "mht":
                        MHTExport mht = new MHTExport();
                        report.Export(mht, stream);
                        break;

                    case "doc":
                    case "docx":
                        Word2007Export word = new Word2007Export();
                        report.Export(word, stream);
                        break;

                    default:
                        return BadRequest("Unsupported export type.");
                }

                stream.Seek(0, SeekOrigin.Begin);
                string contentType = type == "pdf" ? "application/pdf" :
                    type == "xls" || type == "xlsx" ? "application/vnd.ms-excel" :
                    type == "mht" ? "multipart/related" :
                    "application/vnd.ms-word";
                return File(stream, contentType);
            }
            catch (Exception ex)
            {
                return StatusCode(500, $"File export failed: {ex.Message}");
            }
        }
    }
}