using ManagerService.Data;
using ManagerService.Services;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using NSwag.Annotations;
using System;
using System.Threading.Tasks;

namespace ManagerService.Controllers
{
    [Authorize(Policy = ManagerService.Service.Security.Policies.InstanceAdmin)]
    [ApiController, Route("api/[controller]")]
    [OpenApiTag("ApiKey", Description = "API Key management for mobile apps")]
    public class ApiKeyController : ControllerBase
    {
        private readonly ApiKeyDatabaseService _apiKeyService;

        public ApiKeyController(ApiKeyDatabaseService apiKeyService)
        {
            _apiKeyService = apiKeyService;
        }

        /// <summary>List API keys for the caller's instance</summary>
        [HttpGet]
        public async Task<IActionResult> GetApiKeys()
        {
            var instanceId = User.FindFirst(ManagerService.Service.Security.ClaimTypes.InstanceId)?.Value;
            if (string.IsNullOrEmpty(instanceId))
                return Forbid();

            var keys = await _apiKeyService.GetByInstanceAsync(instanceId);
            return Ok(keys);
        }

        /// <summary>Create a new API key (plain key returned once)</summary>
        [HttpPost]
        public async Task<IActionResult> CreateApiKey([FromBody] CreateApiKeyRequest request)
        {
            if (request == null || string.IsNullOrEmpty(request.Name))
                return BadRequest("Name is required");

            var instanceId = User.FindFirst(ManagerService.Service.Security.ClaimTypes.InstanceId)?.Value;
            if (string.IsNullOrEmpty(instanceId))
                return Forbid();

            var plainKey = await _apiKeyService.CreateAsync(instanceId, request.Name, request.AppType);
            return Ok(new { key = plainKey });
        }

        /// <summary>Revoke an API key</summary>
        [HttpDelete("{id}")]
        public async Task<IActionResult> RevokeApiKey(string id)
        {
            var instanceId = User.FindFirst(ManagerService.Service.Security.ClaimTypes.InstanceId)?.Value;
            if (string.IsNullOrEmpty(instanceId))
                return Forbid();

            var success = await _apiKeyService.RevokeAsync(id, instanceId);
            return success ? NoContent() : NotFound();
        }
    }

    public class CreateApiKeyRequest
    {
        public string Name { get; set; }
        public ApiKeyAppType AppType { get; set; }
    }
}