import java.nio.file.*;
import java.time.*;
import java.time.format.DateTimeFormatter;
import java.util.*;

/** Run from the repository root with JDK 25: java ci/Ci.java <command>. */
public class Ci {
    public static void main(String[] args) {
        try {
            if (Runtime.version().feature() < 25) throw new IllegalArgumentException("JDK 25 or newer is required");
            if (args.length == 0) throw new IllegalArgumentException(usage());
            var env = new HashMap<>(System.getenv());
            Path root = Path.of("").toAbsolutePath();
            var commands = new Commands(Duration.ofMinutes(args[0].equals("publish") ? 15 : 75));
            switch (args[0]) {
                case "verify", "publish", "cleanup" -> {
                    var pipeline = new Pipeline(root, env, commands);
                    switch (args[0]) {
                        case "verify" -> pipeline.verify();
                        case "publish" -> pipeline.publish();
                        default -> pipeline.cleanup();
                    }
                }
                case "attempt" -> {
                    Path file = Path.of(Setup.required(env, "GITHUB_ENV"));
                    String id = DateTimeFormatter.ofPattern("yyyyMMddHHmmssSSSSSSSSS")
                            .withZone(ZoneOffset.UTC).format(Instant.now());
                    Files.writeString(file, "CI_RUN_ATTEMPT=" + id + "\n", StandardOpenOption.CREATE, StandardOpenOption.APPEND);
                }
                case "configure-gitea" -> Setup.configureGitea(env);
                case "configure-docker" -> {
                    if (args.length != 2) throw new IllegalArgumentException("Supply the daemon.json path");
                    Setup.configureDocker(Path.of(args[1]));
                }
                case "install-runner" -> Setup.installRunner(root, env, commands,
                        args.length == 2 && args[1].equals("--prepare-only"));
                case "test" -> CiTests.run();
                default -> throw new IllegalArgumentException(usage());
            }
        } catch (Commands.Failure e) {
            System.err.println(e.getMessage());
            System.exit(e.exitCode);
        } catch (Exception e) {
            // Never dump HTTP bodies, process arguments, environment or tokens.
            System.err.println(e instanceof IllegalArgumentException || e instanceof Setup.ApiFailure ? e.getMessage()
                    : "CI failed (" + e.getClass().getSimpleName() + "). Check diagnostics and configuration.");
            System.exit(1);
        }
    }

    static String usage() {
        return "Usage: java ci/Ci.java verify|publish|cleanup|attempt|test|configure-gitea|configure-docker <path>|install-runner [--prepare-only]";
    }
}