package com.wabestway.recall.web;

import cn.hutool.core.io.FileUtil;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.wabestway.commons.http.ResObj;
import com.wabestway.engine.api.dfs.UploadFileDTO;
import com.wabestway.engine.api.dfs.UploadRespVO;
import com.wabestway.engine.api.feign.DfsStorageFeignClient;
import com.wabestway.recall.model.Order;
import com.wabestway.recall.model.OrderList;
import com.wabestway.recall.model.Record;
import com.wabestway.recall.repository.OrderRepository;
import com.wabestway.recall.repository.RecordRepository;
import lombok.extern.slf4j.Slf4j;
import org.springframework.data.domain.*;
import org.springframework.web.bind.annotation.*;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;

import java.io.*;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;

@Slf4j
@RestController
@RequestMapping("/order")
public class OrderController {
    private final RecordRepository recordRepository;
    private final OrderRepository orderRepository;

    private final DfsStorageFeignClient storageFeignClient;

    public OrderController(RecordRepository recordRepository, OrderRepository orderRepository, DfsStorageFeignClient storageFeignClient) {
        this.recordRepository = recordRepository;
        this.orderRepository = orderRepository;
        this.storageFeignClient = storageFeignClient;
    }

    @GetMapping
    public Flux<Order> getAllOrders() {
        return orderRepository.findAll();
    }

    @PostMapping("/list")
    public Mono<ResObj> list(@RequestBody Order order) {
        OrderList resList = new OrderList();
        List<Order> list = new ArrayList<>();
        Sort s = Sort.by("createAt").descending();
        PageRequest pageRequest = PageRequest.of(order.getPage() - 1, order.getPageSize(), s);
        ExampleMatcher matcher = ExampleMatcher.matching()
                .withIgnoreNullValues().withIgnorePaths("createAt", "last", "page", "pageSize");
        Example<Order> ep = Example.of(order, matcher);
        Flux<Order> flux = orderRepository.findAll(ep, s);
        flux.skip(pageRequest.getOffset()).limitRequest(pageRequest.getPageSize()).subscribe(list::add);
        resList.setList(list);
//        Mono<List<Order>> listMono = flux.skip(pageRequest.getOffset()).limitRequest(pageRequest.getPageSize()).collectList();
//        return listMono.flatMap(list -> {
//            resList.setList(list);
//            return Mono.just(ResObj.ok(resList));
//        });
        return flux.count().flatMap(count -> {
            resList.setTotal(count);
            return Mono.just(ResObj.ok(resList));
        });
    }

    @PostMapping("/recallUp")
    public Mono<ResObj> recallUp(@RequestBody Order order) {
        Mono<Order> queryOrder = orderRepository.findByOrderId(order.getOrderId());
        return queryOrder.flatMap(ss -> {
            ss.setStartDate(order.getStartDate());
            ss.setEndDate(order.getEndDate());
            ss.setHolderName(order.getHolderName());
            ss.setHolderPhone(order.getHolderPhone());
            ss.setSupplierName(order.getSupplierName());
            orderRepository.save(ss).subscribe();
            return Mono.just(ResObj.ok());
        }).defaultIfEmpty(ResObj.fail("订单不存在"));
    }

    @PostMapping("/info/{orderId}")
    public Mono<ResObj> findByOrderId(@PathVariable String orderId) {
        Mono<Order> forder = orderRepository.findByOrderId(orderId);
        return forder.flatMap(fo -> {
            Flux<Record> rs = recordRepository.findAllByTraceIdOrderByCreateAtAsc(fo.getTraceId());
            Mono<List<List<String>>> es = rs.map(rr -> rr.getEvents()).collectList();
            Mono<List<String>> events = es.flatMapIterable(lists -> lists).flatMapIterable(list -> list).collectList();
            return events.flatMap(e -> {
                fo.setEvents(e);
                return Mono.just(ResObj.ok(fo));
            });
        });
    }

    @GetMapping("/ffmpeg")
    public Mono<ResObj> createMp4() {
        Order order = new Order();
        order.setComplete("1");
        ExampleMatcher matcher = ExampleMatcher.matching()
                .withIgnoreNullValues().withIgnorePaths("createAt", "last", "page", "pageSize");
        Example<Order> ep = Example.of(order, matcher);
        Sort s = Sort.by("createAt");
        Flux<Order> flux = orderRepository.findAll(ep, s);
        flux.filter(fo -> fo.getFileId() == null).subscribe(fo -> {
            Mono<List<List<String>>> es = recordRepository.findAllByTraceIdOrderByCreateAtAsc(fo.getTraceId()).map(rr -> rr.getEvents()).collectList();
            Mono<List<String>> events = es.flatMapIterable(lists -> lists).flatMapIterable(list -> list).collectList();
            events.subscribe(e -> {
                JSONArray array = JSONArray.parseArray(JSON.toJSONString(e));
                try {
                    createVideo(fo, array.toJSONString());
                } catch (IOException ex) {
                    ex.printStackTrace();
                }
            });
        });
        return Mono.just(ResObj.ok());
    }

    void createVideo(Order fo, String jsonData) throws IOException {

        // 创建临时目录
        Path tempDir = null;
        try {
            tempDir = Files.createTempDirectory("ts");
        } catch (IOException e) {
            e.printStackTrace();
        }
        System.out.println("Created temporary directory: " + tempDir);

        try {
            File tempFile = new File(tempDir.toFile(), "traces.json");
            FileWriter fw = new FileWriter(tempFile);
            BufferedWriter bw = new BufferedWriter(fw);
            bw.write(jsonData);
            bw.flush();
            bw.close();
            fw.close();
            String[] command = {"ts-node", "/opt/trace-transform/src/index.ts"};
            ProcessBuilder processBuilder = new ProcessBuilder(command);
            processBuilder.directory(tempDir.toFile());
            // 在临时目录下执行命令
            Process process = processBuilder.start();

            Thread processThread = new Thread(() -> {
                try {
                    // 读取命令输出
                    BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
                    String line;
                    while ((line = reader.readLine()) != null) {
                        System.out.println(line);
                    }
                    reader.close();
                    // 等待命令执行完成
                    int exitCode = process.waitFor();

                    System.out.println("Command exited with code " + exitCode);
                } catch (InterruptedException | IOException e) {
                    e.printStackTrace();
                }
            });
            processThread.start();

            // Continue with other tasks here...

            try {
                processThread.join();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

            File file = new File(tempDir.toFile(), "video.mp4");
            if (file.exists()) {
                log.info(String.valueOf(file.length()));
                //byte[] fileBytes = Files.readAllBytes(file.toPath());
                byte[] fileBytes = FileUtil.readBytes(file);
                String titles = fo.getOrderId() + ".mp4";
                UploadFileDTO uploadFileDTO = new UploadFileDTO(fileBytes, "RECALL", titles);

                ResObj<UploadRespVO> uploadResObj = storageFeignClient.uploadBytes(uploadFileDTO);
                log.info(JSON.toJSONString(uploadResObj));
                if (uploadResObj.isOk()) {
                    fo.setFileId(uploadResObj.getData().getFileId());
                    fo.setFileUrl(uploadResObj.getData().getFileUrl());
                    orderRepository.save(fo).subscribe();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            log.error(e.getMessage());
        } finally {
            // 删除临时目录
//            Files.walk(tempDir)
//                    .sorted(Comparator.reverseOrder())
//                    .map(Path::toFile)
//                    .forEach(File::delete);
        }
    }
}