package com.vincent.rsf.server.ai.controller;

import com.vincent.rsf.framework.common.R;
import com.vincent.rsf.server.ai.dto.AiChatRequest;
import com.vincent.rsf.server.ai.service.AiChatService;
import com.vincent.rsf.server.system.controller.BaseController;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.MediaType;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;

import java.util.UUID;

@RestController
@Slf4j
@RequiredArgsConstructor
public class AiChatController extends BaseController {

    private final AiChatService aiChatService;

    @PreAuthorize("isAuthenticated()")
    @GetMapping("/ai/chat/runtime")
    public R runtime(@RequestParam(required = false) String promptCode,
                     @RequestParam(required = false) Long sessionId) {
        return R.ok().add(aiChatService.getRuntime(promptCode, sessionId, getLoginUserId(), getTenantId()));
    }

    @PreAuthorize("isAuthenticated()")
    @GetMapping("/ai/chat/sessions")
    public R sessions(@RequestParam(required = false) String promptCode) {
        return R.ok().add(aiChatService.listSessions(promptCode, getLoginUserId(), getTenantId()));
    }

    @PreAuthorize("isAuthenticated()")
    @PostMapping("/ai/chat/session/remove/{sessionId}")
    public R removeSession(@PathVariable Long sessionId) {
        aiChatService.removeSession(sessionId, getLoginUserId(), getTenantId());
        return R.ok("Delete Success").add(sessionId);
    }

    @PreAuthorize("isAuthenticated()")
    @PostMapping(value = "/ai/chat/stream", produces = MediaType.TEXT_EVENT_STREAM_VALUE)
    public SseEmitter stream(@RequestBody AiChatRequest request) {
        String requestId = StringUtils.hasText(request.getRequestId())
                ? request.getRequestId().trim()
                : UUID.randomUUID().toString().replace("-", "");
        request.setRequestId(requestId);
        log.info("AI chat request accepted, requestId={}, userId={}, tenantId={}, sessionId={}",
                requestId, getLoginUserId(), getTenantId(), request.getSessionId());
        return aiChatService.stream(request, getLoginUserId(), getTenantId());
    }
}