Integration.java

package dashboard;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Scanner;

public class Integration {

    private static final String FILE_SEPARATOR = System.getProperty("file.separator");

    public static void page() {
        CodeUtil.clearScreen();

        String path = getPath();

        // Ensure the files exist, create them if needed...
        ensureFilesExist(path);

        // Display stats from intstats.csv:
        File intStatsFile = new File(path + FILE_SEPARATOR + "dashboard" + FILE_SEPARATOR + "files" + FILE_SEPARATOR + "intstats.csv");
        displayIntStats(intStatsFile);

        // Display tables from integration.csv:
        File integrationFile = new File(path + FILE_SEPARATOR + "dashboard" + FILE_SEPARATOR + "files" + FILE_SEPARATOR + "integration.csv");
        displayIntegrationTable(integrationFile);

        System.out.print("\nPress any key to go to the Navigation page...");
        waitForUserInput();

        Navigation.navbar();
    }

    private static void waitForUserInput() {
        try {
            System.in.read();
        } catch (IOException e) {
            System.out.println("Error while waiting for user input: " + e.getMessage());
        }
    }

    private static String getPath() {
        try {
            return new File(".").getCanonicalPath();
        } catch (IOException e) {
            System.out.println("Error: while getting the path of the program.");
            return "";
        }
    }

    //Shows the statistics for past integrations:
    private static void displayIntStats(File file) {
        System.out.println("Integration Stats:\n");

        try (Scanner scanner = new Scanner(file)) {
            // Display the header
            if (scanner.hasNextLine()) {
                System.out.println(scanner.nextLine());
            }

            // Display the data
            while (scanner.hasNextLine()) {
                System.out.println(scanner.nextLine());
            }
        } catch (IOException e) {
            System.out.println("Error reading file: " + e.getMessage());
        }

        System.out.println(); 
        // Add a newline for better formatting
    }

    private static void displayIntegrationTable(File file) {
        System.out.println("Integration Table:\n");
    
        try (Scanner scanner = new Scanner(file)) {
            // Display the header
            if (scanner.hasNextLine()) {
                System.out.println(scanner.nextLine());
            }
    
            // Display the data with proper formatting
            while (scanner.hasNextLine()) {
                String line = scanner.nextLine();
                String[] fields = line.split(",");
                if (fields.length == 5) {
                    System.out.printf("%-20s%-15s%-15s%-15s%-20s\n", fields[0], fields[1], fields[2], fields[3], fields[4]);
                } else {
                    System.out.println("Error: Missing tokens in the input file. Skipping the current line.");
                }
            }
        } catch (IOException e) {
            System.out.println("Error reading file: " + e.getMessage());
        }
    }
    

    private static void ensureFilesExist(String path) {
        try {
            // Ensure intstats.csv exists
            File intStatsFile = new File(path + FILE_SEPARATOR + "dashboard" + FILE_SEPARATOR + "files" + FILE_SEPARATOR + "intstats.csv");
            if (!intStatsFile.exists()) {
                createIntStatsFile(intStatsFile);
            }

            // Ensure integration.csv exists
            File integrationFile = new File(path + FILE_SEPARATOR + "dashboard" + FILE_SEPARATOR + "files" + FILE_SEPARATOR + "integration.csv");
            if (!integrationFile.exists()) {
                createIntegrationFile(integrationFile);
            }
        } catch (IOException e) {
            System.out.println("Error while ensuring files exist: " + e.getMessage());
        }
    }

    //backup option for creating a default file if it doesn't exist:

    private static void createIntStatsFile(File file) throws IOException {
        // Create intstats.csv with headers and data
        try (PrintWriter writer = new PrintWriter(file)) {
            writer.println("MonthYear,Deployments");
            writer.println("Oct-22,8");
            writer.println("Nov-22,12");
            writer.println("Dec-22,15");
            writer.println("Jan-23,10");
        }
    }

    private static void createIntegrationFile(File file) throws IOException {
        // Create integration.csv with headers and data
        try (PrintWriter writer = new PrintWriter(file)) {
            writer.println("PipelineName,Environment,Branch,Status,LastRunTimestamp");
            writer.println("SQL-Analyze-Dev,Dev,Feature-123,Success,30-10-2023 08:00");
            writer.println("SQL-Deploy-Dev,Dev,Main,Success,30-10-2023 08:05");
            writer.println("SQL-Test-Dev,Dev,Feature-124,Failed,30-10-2023 08:10");
            writer.println("SQL-Analyze-Prod,Production,Main,Success,30-10-2023 08:15");
        }
    }
}