using Microsoft.AspNetCore.Mvc;
using vendorApproverBackend.Responses;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authorization;
using System.Security.Claims;
using vendorApproverBackend.Services;


[ApiController]
[Route("api/stats")]
public class StatisticsController : ControllerBase
{
    private readonly StatsService _statsService;

    private readonly UserService _userService;

    public StatisticsController(StatsService statsService, UserService userService)
    {
        _statsService = statsService;
        _userService = userService;
    }

    [HttpGet("admin-stats")]
    [Authorize(Roles = "ADMIN,EMPLOYEE,VENDOR,FINANCIAL,RENWE_APPROVER,MANAGER,PERFERMANCE_MANAGER")]
    public async Task<ActionResult<AdminStatsResponse>> GetAdminStats()
    {
        var stats = await _statsService.GetAdminStatsAsync();
        return Ok(stats);
    }

    [HttpGet("vendor-stats/{vendorId}")]
    [Authorize(Roles = "ADMIN,EMPLOYEE,VENDOR,FINANCIAL,RENWE_APPROVER,MANAGER,PERFERMANCE_MANAGER")]
    public async Task<ActionResult<VendorStatsResponse>> GetVendorStats(long vendorId)
    {

        var username = User.FindFirstValue(ClaimTypes.Name);

        if (string.IsNullOrEmpty(username))
        {
            return Unauthorized("Username claim not found in token.");
        }
        var user = await _userService.FindByUsernameAsync(username);

        if (user == null)
        {
            return NotFound("User not found.");
        }
        if (user.Vendor == null)
        {
            return NotFound("User is not a vendor ");
        }

        var stats = await _statsService.GetVendorStatsAsync(user.Vendor.Id);
        return Ok(stats);
    }


    [HttpGet("employee-stats")]
    [Authorize(Roles = "ADMIN,EMPLOYEE,VENDOR,FINANCIAL,RENWE_APPROVER,MANAGER,PERFERMANCE_MANAGER")]
    public async Task<ActionResult<EmployeeStatsResponse>> GetEmployeeStats()
    {
        var username = User.FindFirstValue(ClaimTypes.Name);

        if (string.IsNullOrEmpty(username))
        {
            return Unauthorized("Username claim not found in token.");
        }
        var user = await _userService.FindByUsernameAsync(username);

        if (user == null)
        {
            return NotFound("User not found.");
        }

        var stats = await _statsService.GetEmployeeStatsAsync(user.Id);
        return Ok(stats);
    }
    

    [HttpGet("payment-financial-and-admin-stats")]
    [Authorize(Roles = "ADMIN,EMPLOYEE,VENDOR,FINANCIAL,RENWE_APPROVER,MANAGER,PERFERMANCE_MANAGER")]
    public async Task<ActionResult<FinancialStatsResponse>> GetFinancialStats()
    {
        var stats = await _statsService.GetFinancialStatsAsync();
        return Ok(stats);
    }
}