YTSearch/YTSearch/Controllers/YouTubeController.cs

using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using YTSearch.Contracts;
using YTSearch.Models;

namespace YTSearch.Controllers
{
    [ApiController]
    [Route("api/[controller]")]
    public class YouTubeController : ControllerBase
    {
        private readonly IYouTubeSearchService _youtubeService;

        public YouTubeController(IYouTubeSearchService youtubeService)
        {
            _youtubeService = youtubeService;
        }

        /// <summary>
        /// Search for YouTube videos by keywords
        /// </summary>
        /// <param name="keywords">Search keywords</param>
        /// <param name="pageToken">Token for pagination (optional)</param>
        /// <param name="maxResults">Maximum number of results (default: 20, max: 50)</param>
        /// <returns>List of videos with details</returns>
        [HttpGet("search")]
        public async Task<ActionResult<SearchResponse>> SearchVideos(
            [FromQuery] string keywords,
            [FromQuery] string pageToken = "",
            [FromQuery] int maxResults = 20)
        {
            if (string.IsNullOrWhiteSpace(keywords))
            {
                return BadRequest(new { message = "Keywords are required" });
            }

            if (maxResults > 50)
            {
                return BadRequest(new { message = "Maximum results cannot exceed 50" });
            }

            var request = new SearchRequest
            {
                Keywords = keywords,
                PageToken = pageToken,
                MaxResults = maxResults
            };

            var result = await _youtubeService.SearchVideosAsync(request);
            return Ok(result);
        }

        /// <summary>
        /// Search for YouTube videos using POST method
        /// </summary>
        [HttpPost("search")]
        public async Task<ActionResult<SearchResponse>> SearchVideosPost([FromBody] SearchRequest request)
        {
            if (string.IsNullOrWhiteSpace(request.Keywords))
            {
                return BadRequest(new { message = "Keywords are required" });
            }

            if (request.MaxResults > 50)
            {
                return BadRequest(new { message = "Maximum results cannot exceed 50" });
            }

            var result = await _youtubeService.SearchVideosAsync(request);
            return Ok(result);
        }
    }
}