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import java.util.*;
// A program to work with Mini-Git. Manages the state of repositories and allows for all
// operations defined in Mini-Git.
public class Client {
private static List<String> ops = new ArrayList<>();
public static void main(String[] args) {
Collections.addAll(ops, "create", "head", "history", "commit", "drop",
"synchronize", "quit");
Scanner console = new Scanner(System.in);
Map<String, Repository> repos = new HashMap<>();
String op = "";
String name = "";
intro();
while (!op.equalsIgnoreCase("quit")) {
System.out.println("Available repositories: ");
for (Repository repo : repos.values()) {
System.out.println("\t" + repo);
}
System.out.println("Operations: " + ops);
System.out.print("Enter operation and repository: ");
String[] input = console.nextLine().split("\\s+");
op = input[0];
name = input.length > 1 ? input[1] : "";
while (!ops.contains(op) || (!op.equalsIgnoreCase("create") &&
!op.equalsIgnoreCase("quit") &&
!repos.containsKey(name))) {
System.out.println(" **ERROR**: Operation or repository not recognized.");
System.out.print("Enter operation and repository: ");
input = console.nextLine().split("\\s+");
op = input[0];
name = input.length > 1 ? input[1] : "";
}
Repository currRepo = repos.get(name);
op = op.toLowerCase();
if (op.equalsIgnoreCase("create")) {
if (currRepo != null) {
System.out.println(" **ERROR**: Repository with that name already exists.");
} else {
Repository newRepo = new Repository(name);
repos.put(name, newRepo);
System.out.println(" New repository created: " + newRepo);
}
} else if (op.equalsIgnoreCase("head")) {
System.out.println(currRepo.getRepoHead());
} else if (op.equalsIgnoreCase("history")) {
System.out.print("How many commits back? ");
int nHist = console.nextInt();
console.nextLine();
System.out.println(currRepo.getHistory(nHist));
} else if (op.equalsIgnoreCase("commit")) {
System.out.print("Enter commit message: ");
String message = console.nextLine();
System.out.println(" New commit: " + currRepo.commit(message));
} else if (op.equalsIgnoreCase("drop")) {
System.out.print("Enter ID to drop: ");
String idDrop = console.nextLine();
if (currRepo.drop(idDrop)) {
System.out.println(" Successfully dropped " + idDrop);
} else {
System.out.println(" No commit dropped!");
}
} else if (op.equalsIgnoreCase("synchronize")) {
System.out.print("Which repository would you like to " +
"synchronize into the given one? ");
String repo = console.nextLine();
if (repo.equals(name)) {
System.out.println("Cannot synchronize the same repositories!");
} else if (!repos.containsKey(repo)) {
System.out.println("Repository does not exist!");
} else {
currRepo.synchronize(repos.get(repo));
}
}
System.out.println();
}
}
// Prints out an introduction to the Mini-Git test client.
public static void intro() {
System.out.println("Welcome to the Mini-Git test client!");
System.out.println("Use this program to test your Mini-Git repository implemenation.");
System.out.println("Make sure to test all operations in all cases --");
System.out.println("some cases are particularly tricky.");
System.out.println();
}
}
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