package com.crawler;

import com.crawler.model.Movie;
import com.crawler.strategy.impl.DoubanCrawler;
import com.crawler.strategy.impl.QuotesCrawler;
import com.crawler.strategy.impl.TencentCrawler;

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;

public class TestCrawler {
    public static void main(String[] args) {
        System.out.println("\n" + "=".repeat(80));
        System.out.println("   Movie Data Crawler - 3 Sites");
        System.out.println("=".repeat(80) + "\n");

        List<Movie> allMovies = new ArrayList<>();
        List<Movie> doubanMovies = new ArrayList<>();
        List<Movie> quotesMovies = new ArrayList<>();
        List<Movie> tencentMovies = new ArrayList<>();

        // Crawl Douban
        System.out.println("\n" + "-".repeat(80));
        System.out.println("Crawling Douban Movies...");
        System.out.println("-".repeat(80));
        try {
            DoubanCrawler doubanCrawler = new DoubanCrawler();
            doubanMovies = doubanCrawler.crawl();
            allMovies.addAll(doubanMovies);
            System.out.println("\nDouban crawling completed! Got " + doubanMovies.size() + " movies");
            printMovieList("Douban", doubanMovies);
        } catch (Exception e) {
            System.err.println("Douban crawling error: " + e.getMessage());
        }

        // Crawl Quotes
        System.out.println("\n" + "-".repeat(80));
        System.out.println("Crawling Quotes to Movies...");
        System.out.println("-".repeat(80));
        try {
            QuotesCrawler quotesCrawler = new QuotesCrawler();
            quotesMovies = quotesCrawler.crawl();
            allMovies.addAll(quotesMovies);
            System.out.println("\nQuotes crawling completed! Got " + quotesMovies.size() + " movies");
            printMovieList("Quotes", quotesMovies);
        } catch (Exception e) {
            System.err.println("Quotes crawling error: " + e.getMessage());
        }

        // Crawl Tencent
        System.out.println("\n" + "-".repeat(80));
        System.out.println("Crawling Tencent Movies...");
        System.out.println("-".repeat(80));
        try {
            TencentCrawler tencentCrawler = new TencentCrawler();
            tencentMovies = tencentCrawler.crawl();
            allMovies.addAll(tencentMovies);
            System.out.println("\nTencent crawling completed! Got " + tencentMovies.size() + " movies");
            printMovieList("Tencent", tencentMovies);
        } catch (Exception e) {
            System.err.println("Tencent crawling error: " + e.getMessage());
        }

        // Sort by rating descending
        allMovies.sort(Comparator.comparing(Movie::getRating).reversed());

        // Show summary
        System.out.println("\n\n" + "=".repeat(80));
        System.out.println("   Crawling Summary");
        System.out.println("=".repeat(80));
        System.out.println("\nData statistics:");
        System.out.println("  - Douban: " + doubanMovies.size() + " movies");
        System.out.println("  - Quotes: " + quotesMovies.size() + " movies");
        System.out.println("  - Tencent: " + tencentMovies.size() + " movies");
        System.out.println("  - Total: " + allMovies.size() + " movies");

        System.out.println("\nTop 50 Movies:");
        System.out.println("-".repeat(80));
        System.out.printf("%-6s %-35s %-10s %-15s %-12s %-15s %-10s\n", 
                        "Rank", "Title", "Rating", "Source", "Year", "Director", "Actors");
        System.out.println("-".repeat(80));

        int count = 0;
        for (Movie movie : allMovies) {
            if (count >= 50) break;
            System.out.printf("%-6d %-35s %-10.1f %-15s %-12s %-15s %-10s\n",
                    count + 1,
                    truncate(movie.getTitle(), 35),
                    movie.getRating() != null ? movie.getRating() : 0.0,
                    movie.getSource(),
                    movie.getReleaseDate() != null && !movie.getReleaseDate().isEmpty() ? movie.getReleaseDate() : "Unknown",
                    truncate(movie.getDirector(), 15),
                    truncate(movie.getActors(), 10));
            count++;
        }

        System.out.println("-".repeat(80) + "\n");

        // Save to CSV file
        String timestamp = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyyMMdd_HHmmss"));
        String csvFilename = "movies_" + timestamp + ".csv";
        try {
            saveToCSV(allMovies, doubanMovies, quotesMovies, tencentMovies, csvFilename);
            System.out.println("Data saved to file: " + csvFilename);
            System.out.println("  - Contains complete data, can be opened directly in Excel");
        } catch (IOException e) {
            System.err.println("Save CSV error: " + e.getMessage());
        }

        System.out.println("\n" + "=".repeat(80));
        System.out.println("   Program completed!");
        System.out.println("=".repeat(80) + "\n");
    }

    private static void printMovieList(String source, List<Movie> movies) {
        System.out.println("\n" + source + " Movie List (First 30):");
        System.out.println("-".repeat(80));
        System.out.printf("%-6s %-35s %-10s %-12s %-15s %-10s\n", 
                        "No.", "Title", "Rating", "Year", "Director", "Source");
        System.out.println("-".repeat(80));

        int index = 0;
        for (Movie movie : movies) {
            if (index >= 30) break;
            System.out.printf("%-6d %-35s %-10.1f %-12s %-15s %-10s\n",
                    index + 1,
                    truncate(movie.getTitle(), 35),
                    movie.getRating() != null ? movie.getRating() : 0.0,
                    movie.getReleaseDate() != null && !movie.getReleaseDate().isEmpty() ? movie.getReleaseDate() : "Unknown",
                    truncate(movie.getDirector(), 15),
                    movie.getSource());
            index++;
        }
        System.out.println("-".repeat(80));
    }

    private static void saveToCSV(List<Movie> allMovies, List<Movie> doubanMovies, 
                                 List<Movie> quotesMovies, List<Movie> tencentMovies, 
                                 String filename) throws IOException {
        try (BufferedWriter writer = new BufferedWriter(new FileWriter(filename))) {
            // Write header
            writer.write("No.,Title,Rating,Director,Actors,Year,Source");
            writer.newLine();

            // Write all movies
            writer.newLine();
            writer.write("All Movies (Sorted by Rating)");
            writer.newLine();
            writeMoviesToCSV(writer, allMovies);
            
            // Write Douban movies
            writer.newLine();
            writer.write("Douban Movies");
            writer.newLine();
            writeMoviesToCSV(writer, doubanMovies);
            
            // Write Quotes movies
            writer.newLine();
            writer.write("Quotes Movies");
            writer.newLine();
            writeMoviesToCSV(writer, quotesMovies);
            
            // Write Tencent movies
            writer.newLine();
            writer.write("Tencent Movies");
            writer.newLine();
            writeMoviesToCSV(writer, tencentMovies);
        }
    }

    private static void writeMoviesToCSV(BufferedWriter writer, List<Movie> movies) throws IOException {
        int index = 0;
        for (Movie movie : movies) {
            String line = String.format("%d,\"%s\",%.1f,\"%s\",\"%s\",\"%s\",\"%s\"",
                    index + 1,
                    escapeCSV(movie.getTitle()),
                    movie.getRating() != null ? movie.getRating() : 0.0,
                    escapeCSV(movie.getDirector()),
                    escapeCSV(movie.getActors()),
                    escapeCSV(movie.getReleaseDate()),
                    escapeCSV(movie.getSource()));
            writer.write(line);
            writer.newLine();
            index++;
        }
    }

    private static String escapeCSV(String str) {
        if (str == null || str.isEmpty()) {
            return "";
        }
        if (str.contains(",") || str.contains("\"") || str.contains("\n")) {
            return "\"" + str.replace("\"", "\"\"") + "\"";
        }
        return str;
    }

    private static String truncate(String str, int maxLength) {
        if (str == null || str.isEmpty()) {
            return "";
        }
        return str.length() > maxLength ? str.substring(0, maxLength - 3) + "..." : str;
    }
}