package com.hlab.yanalyst.web;

import com.hlab.yanalyst.domain.channel.Channel;
import com.hlab.yanalyst.domain.channel.ChannelVideo;
import com.hlab.yanalyst.domain.channel.ChannelService;
import com.hlab.yanalyst.global.common.ApiResponse;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.tags.Tag;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;

@Controller
@RequiredArgsConstructor
@Tag(name = "Channel Detail", description = "Channel Detail & Video Management")
public class ChannelDetailController {

    private final ChannelService channelService;

    @GetMapping("/channels/{id}")
    public String channelDetail(@PathVariable("id") Long id, Model model) {
        Channel channel = channelService.getChannel(id);
        model.addAttribute("channel", channel);
        model.addAttribute("videos", channelService.getChannelVideos(id));
        return "channel_detail";
    }
    
    @GetMapping("/channels/videos")
    public String channelsVideos(@RequestParam("ids") java.util.List<Long> ids, Model model) {
        java.util.List<Channel> channels = channelService.getChannelsByIds(ids);
        java.util.List<String> selectedYoutubeIds = channels.stream()
                .map(Channel::getChannelId)
                .toList();
                
        model.addAttribute("channels", channels);
        model.addAttribute("selectedYoutubeIds", selectedYoutubeIds);
        return "multi_channel_videos";
    }

    @PostMapping("/api/channels/{id}/sync")
    @ResponseBody
    @Operation(summary = "Sync Channel Videos", description = "Fetch and sync all videos from the channel's upload playlist.")
    public ApiResponse<String> syncChannelVideos(@PathVariable("id") Long id) {
        channelService.collectChannelVideos(id);
        return ApiResponse.ok("Synced successfully");
    }

    @PostMapping("/api/channels/videos/{videoId}/script")
    @ResponseBody
    @Operation(summary = "Extract Script", description = "Extract transcript for a specific video.")
    public ApiResponse<Void> extractScript(@PathVariable("videoId") Long videoId) {
        channelService.extractScript(videoId);
        return ApiResponse.ok(null);
    }

    @PostMapping("/api/channels/{channelId}/scripts/all")
    @ResponseBody
    @Operation(summary = "Extract All Scripts", description = "Extract transcripts for all videos in the channel.")
    public ApiResponse<String> extractAllScripts(@PathVariable("channelId") Long channelId) {
        channelService.extractAllScripts(channelId);
        return ApiResponse.ok("Bulk extraction completed");
    }
}