# This test runs the radicle-node and radicle-httpd services on a seed host,
# and verifies that an alice peer can host a repository on the seed,
# and that a bob peer can send alice a patch via the seed.

{ pkgs, ... }:

let
  # The Node ID depends on nodes.seed.services.radicle.privateKeyFile
  seed-nid = "z6Mkg52RcwDrPKRzzHaYgBkHH3Gi5p4694fvPstVE9HTyMB6";
  seed-ssh-keys = import ./ssh-keys.nix pkgs;
  seed-tls-certs = import common/acme/server/snakeoil-certs.nix;

  commonHostConfig =
    {
      nodes,
      config,
      pkgs,
      ...
    }:
    {
      environment.systemPackages = [
        config.services.radicle.package
        pkgs.curl
        pkgs.gitMinimal
        pkgs.jq
      ];
      environment.etc."gitconfig".text = ''
        [init]
          defaultBranch = main
        [user]
          email = root@${config.networking.hostName}
          name = ${config.networking.hostName}
      '';
      networking = {
        extraHosts = ''
          ${nodes.seed.networking.primaryIPAddress} ${nodes.seed.services.radicle.httpd.nginx.serverName}
        '';
      };
      security.pki.certificateFiles = [
        seed-tls-certs.ca.cert
      ];
    };

  radicleConfig =
    { nodes, ... }:
    alias:
    pkgs.writeText "config.json" (
      builtins.toJSON {
        preferredSeeds = [
          "${seed-nid}@seed:${toString nodes.seed.services.radicle.node.listenPort}"
        ];
        node = {
          inherit alias;
          relay = "never";
          seedingPolicy = {
            default = "block";
          };
        };
      }
    );
in

{
  name = "radicle";

  meta = with pkgs.lib.maintainers; {
    maintainers = [
      julm
      lorenzleutgeb
    ];
  };

  nodes = {
    seed =
      { pkgs, config, ... }:
      {
        imports = [ commonHostConfig ];

        services.radicle = {
          enable = true;
          privateKeyFile = seed-ssh-keys.snakeOilEd25519PrivateKey;
          publicKey = seed-ssh-keys.snakeOilEd25519PublicKey;
          node = {
            openFirewall = true;
          };
          httpd = {
            enable = true;
            nginx = {
              serverName = seed-tls-certs.domain;
              addSSL = true;
              sslCertificate = seed-tls-certs.${seed-tls-certs.domain}.cert;
              sslCertificateKey = seed-tls-certs.${seed-tls-certs.domain}.key;
            };
          };
          settings = {
            preferredSeeds = [ ];
            node = {
              relay = "always";
              seedingPolicy = {
                default = "allow";
                scope = "all";
              };
            };
          };
        };

        services.nginx = {
          enable = true;
        };

        networking.firewall.allowedTCPPorts = [ 443 ];
      };

    alice = {
      imports = [ commonHostConfig ];
    };

    bob = {
      imports = [ commonHostConfig ];
    };
  };

  testScript =
    { nodes, ... }@args:
    ''
      start_all()

      with subtest("seed can run radicle-node"):
        # The threshold and/or hardening may have to be changed with new features/checks
        print(seed.succeed("systemd-analyze security radicle-node.service --threshold=10 --no-pager"))
        seed.wait_for_unit("radicle-node.service")
        seed.wait_for_open_port(${toString nodes.seed.services.radicle.node.listenPort})

      with subtest("seed can run radicle-httpd"):
        # The threshold and/or hardening may have to be changed with new features/checks
        print(seed.succeed("systemd-analyze security radicle-httpd.service --threshold=10 --no-pager"))
        seed.wait_for_unit("radicle-httpd.service")
        seed.wait_for_open_port(${toString nodes.seed.services.radicle.httpd.listenPort})
        seed.wait_for_open_port(443)
        assert alice.succeed("curl -sS 'https://${nodes.seed.services.radicle.httpd.nginx.serverName}/api/v1' | jq -r .nid") == "${seed-nid}\n"
        assert bob.succeed("curl -sS 'https://${nodes.seed.services.radicle.httpd.nginx.serverName}/api/v1' | jq -r .nid") == "${seed-nid}\n"

      with subtest("alice can create a Node ID"):
        alice.succeed("rad auth --alias alice --stdin </dev/null")
        alice.copy_from_host("${radicleConfig args "alice"}", "/root/.radicle/config.json")
      with subtest("alice can run a node"):
        alice.succeed("rad node start")
      with subtest("alice can create a Git repository"):
        alice.succeed(
          "mkdir /tmp/repo",
          "git -C /tmp/repo init",
          "echo hello world > /tmp/repo/testfile",
          "git -C /tmp/repo add .",
          "git -C /tmp/repo commit -m init"
        )
      with subtest("alice can create a Repository ID"):
        alice.succeed(
          "cd /tmp/repo && rad init --name repo --description descr --default-branch main --public"
        )
      alice_repo_rid=alice.succeed("cd /tmp/repo && rad inspect --rid").rstrip("\n")
      with subtest("alice can send a repository to the seed"):
        alice.succeed(f"rad sync --seed ${seed-nid} {alice_repo_rid}")

      with subtest(f"seed can receive the repository {alice_repo_rid}"):
        seed.wait_until_succeeds("test 1 = \"$(rad-system stats | jq .local.repos)\"")

      with subtest("bob can create a Node ID"):
        bob.succeed("rad auth --alias bob --stdin </dev/null")
        bob.copy_from_host("${radicleConfig args "bob"}", "/root/.radicle/config.json")
        bob.succeed("rad node start")
      with subtest("bob can clone alice's repository from the seed"):
        bob.succeed(f"rad clone {alice_repo_rid} /tmp/repo")
        assert bob.succeed("cat /tmp/repo/testfile") == "hello world\n"

      with subtest("bob can clone alice's repository from the seed through the HTTP gateway"):
        bob.succeed(f"git clone https://${nodes.seed.services.radicle.httpd.nginx.serverName}/{alice_repo_rid[4:]}.git /tmp/repo-http")
        assert bob.succeed("cat /tmp/repo-http/testfile") == "hello world\n"

      with subtest("alice can push the main branch to the rad remote"):
        alice.succeed(
          "echo hello bob > /tmp/repo/testfile",
          "git -C /tmp/repo add .",
          "git -C /tmp/repo commit -m 'hello to bob'",
          "git -C /tmp/repo push rad main"
        )
      with subtest("bob can sync bob's repository from the seed"):
        bob.succeed(
          "cd /tmp/repo && rad sync --seed ${seed-nid}",
          "cd /tmp/repo && git pull"
        )
        assert bob.succeed("cat /tmp/repo/testfile") == "hello bob\n"

      with subtest("bob can push a patch"):
        bob.succeed(
          "echo hello alice > /tmp/repo/testfile",
          "git -C /tmp/repo checkout -b for-alice",
          "git -C /tmp/repo add .",
          "git -C /tmp/repo commit -m 'hello to alice'",
          "git -C /tmp/repo push -o patch.message='hello for alice' rad HEAD:refs/patches"
        )

      bob_repo_patch1_pid=bob.succeed("cd /tmp/repo && git branch --remotes | sed -ne 's:^ *rad/patches/::'p").rstrip("\n")
      with subtest("alice can receive the patch"):
        alice.wait_until_succeeds("test 1 = \"$(rad stats | jq .local.patches)\"")
        alice.succeed(
          f"cd /tmp/repo && rad patch show {bob_repo_patch1_pid} | grep -E '{bob_repo_patch1_pid[:7]} @ .+ by bob'",
          f"cd /tmp/repo && rad patch checkout {bob_repo_patch1_pid}"
        )
        assert alice.succeed("cat /tmp/repo/testfile") == "hello alice\n"
      with subtest("alice can comment the patch"):
        alice.succeed(
          f"cd /tmp/repo && rad patch comment {bob_repo_patch1_pid} -m thank-you"
        )
      with subtest("alice can merge the patch"):
        alice.succeed(
          "git -C /tmp/repo checkout main",
          f"git -C /tmp/repo merge patch/{bob_repo_patch1_pid[:7]}",
          "git -C /tmp/repo push rad main",
          "cd /tmp/repo && rad patch list | grep -qxF 'Nothing to show.'"
        )
    '';
}
