"""
Tests for Repo Service.
"""
import base64
import pytest
import time
from pathlib import Path
from app.models.repo import Repo
from app.models.server import Server
from app.services.repo_service import RepoService
from app.services.server_service import ServerService
from app.services.ssh_key_service import SshKeyService


# Valid test SSH key
VALID_SSH_KEY = """-----BEGIN OPENSSH PRIVATE KEY-----
b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW
QyNTUxOQAAACB/pDNwjNcznNaRlLNF5G9hCQNjbqNZ7QeKyLIy/nvHAAAAJi/vqmQv6pk
AAAAAtzc2gtZWQyNTUxOQAAACB/pDNwjNcznNaRlLNF5G9hCQNjbqNZ7QeKyLIy/nvHAA
AAAEBD0cWNQnpLDUYEGNMSgVIApVJfCFuRfGG3uxJZRKLvqH+kM3CM1zOc1pGUssXkb2E
JA2uuo1ntB4rIsjL+e8cAAAADm1lc3NlbmdlckBrZW50cm9zBAgMEBQ=
-----END OPENSSH PRIVATE KEY-----
"""


def create_test_server_with_repo(db_session, server_name="test-server"):
    """Helper to create a test server."""
    ssh_service = SshKeyService(db_session)
    ssh_key = ssh_service.create_ssh_key(name="test-ssh-key", private_key=VALID_SSH_KEY)

    server_service = ServerService(db_session)
    return server_service.create_server(
        name=server_name,
        url="https://gitea.example.com",
        api_token="test-api-token",
        ssh_key_id=ssh_key.id,
        sync_enabled=False,
        schedule_cron=None
    )


class TestCreateRepo:
    """Tests for create_repo method."""

    def test_create_repo_success(self, db_session, test_env_vars):
        """Test successful repository creation."""
        server = create_test_server_with_repo(db_session)
        service = RepoService(db_session)

        repo = service.create_repo(
            server_id=server.id,
            name="test-repo",
            full_name="owner/test-repo",
            clone_url="git@gitea.example.com:owner/test-repo.git",
            local_path="/tmp/test-repo"
        )

        assert repo.id is not None
        assert repo.server_id == server.id
        assert repo.name == "test-repo"
        assert repo.full_name == "owner/test-repo"
        assert repo.clone_url == "git@gitea.example.com:owner/test-repo.git"
        assert repo.local_path == "/tmp/test-repo"
        assert repo.status == "pending"
        assert repo.last_sync_at is None
        assert repo.created_at is not None

    def test_create_repo_with_invalid_server_id(self, db_session, test_env_vars):
        """Test that invalid server_id is rejected."""
        service = RepoService(db_session)

        with pytest.raises(ValueError, match="Server not found"):
            service.create_repo(
                server_id=99999,
                name="test-repo",
                full_name="owner/test-repo",
                clone_url="git@gitea.example.com:owner/test-repo.git",
                local_path="/tmp/test-repo"
            )

    def test_create_repo_generates_local_path(self, db_session, test_env_vars):
        """Test that local_path can be generated correctly."""
        server = create_test_server_with_repo(db_session)
        service = RepoService(db_session)

        # Test with None local_path to let it generate
        repo = service.create_repo(
            server_id=server.id,
            name="auto-path-repo",
            full_name="owner/auto-path-repo",
            clone_url="git@gitea.example.com:owner/auto-path-repo.git",
            local_path=None
        )

        # Should generate path based on server and repo name
        assert repo.local_path is not None
        assert "auto-path-repo" in repo.local_path

    def test_create_repo_duplicate_name_same_server(self, db_session, test_env_vars):
        """Test that duplicate repo names on same server are allowed (different from servers)."""
        server = create_test_server_with_repo(db_session)
        service = RepoService(db_session)

        # Create first repo
        service.create_repo(
            server_id=server.id,
            name="duplicate-repo",
            full_name="owner1/duplicate-repo",
            clone_url="git@gitea.example.com:owner1/duplicate-repo.git",
            local_path="/tmp/duplicate-repo-1"
        )

        # Create second repo with same name but different full_name
        repo2 = service.create_repo(
            server_id=server.id,
            name="duplicate-repo",
            full_name="owner2/duplicate-repo",
            clone_url="git@gitea.example.com:owner2/duplicate-repo.git",
            local_path="/tmp/duplicate-repo-2"
        )

        assert repo2 is not None
        assert repo2.full_name == "owner2/duplicate-repo"

    def test_create_repo_default_status(self, db_session, test_env_vars):
        """Test that new repos have default 'pending' status."""
        server = create_test_server_with_repo(db_session)
        service = RepoService(db_session)

        repo = service.create_repo(
            server_id=server.id,
            name="status-test-repo",
            full_name="owner/status-test-repo",
            clone_url="git@gitea.example.com:owner/status-test-repo.git",
            local_path="/tmp/status-test-repo"
        )

        assert repo.status == "pending"


class TestListRepos:
    """Tests for list_repos method."""

    def test_list_repos_empty(self, db_session, test_env_vars):
        """Test listing repos when none exist."""
        server = create_test_server_with_repo(db_session)
        service = RepoService(db_session)

        repos = service.list_repos(server.id)

        assert repos == []

    def test_list_repos_multiple(self, db_session, test_env_vars):
        """Test listing multiple repos for a server."""
        server = create_test_server_with_repo(db_session)
        service = RepoService(db_session)

        service.create_repo(
            server_id=server.id,
            name="repo-1",
            full_name="owner/repo-1",
            clone_url="git@gitea.example.com:owner/repo-1.git",
            local_path="/tmp/repo-1"
        )
        service.create_repo(
            server_id=server.id,
            name="repo-2",
            full_name="owner/repo-2",
            clone_url="git@gitea.example.com:owner/repo-2.git",
            local_path="/tmp/repo-2"
        )

        repos = service.list_repos(server.id)

        assert len(repos) == 2
        assert any(r.name == "repo-1" for r in repos)
        assert any(r.name == "repo-2" for r in repos)

    def test_list_repos_filters_by_server(self, db_session, test_env_vars):
        """Test that list_repos only returns repos for specified server."""
        server1 = create_test_server_with_repo(db_session, "server-1")
        server2 = create_test_server_with_repo(db_session, "server-2")
        service = RepoService(db_session)

        # Create repo for server1
        service.create_repo(
            server_id=server1.id,
            name="server1-repo",
            full_name="owner/server1-repo",
            clone_url="git@gitea.example.com:owner/server1-repo.git",
            local_path="/tmp/server1-repo"
        )

        # Create repo for server2
        service.create_repo(
            server_id=server2.id,
            name="server2-repo",
            full_name="owner/server2-repo",
            clone_url="git@gitea.example.com:owner/server2-repo.git",
            local_path="/tmp/server2-repo"
        )

        # List repos for server1 should only return server1's repo
        server1_repos = service.list_repos(server1.id)
        assert len(server1_repos) == 1
        assert server1_repos[0].name == "server1-repo"

        # List repos for server2 should only return server2's repo
        server2_repos = service.list_repos(server2.id)
        assert len(server2_repos) == 1
        assert server2_repos[0].name == "server2-repo"

    def test_list_repos_ordered_by_creation(self, db_session, test_env_vars):
        """Test that repos are listed in creation order."""
        server = create_test_server_with_repo(db_session)
        service = RepoService(db_session)

        repo1 = service.create_repo(
            server_id=server.id,
            name="first-repo",
            full_name="owner/first-repo",
            clone_url="git@gitea.example.com:owner/first-repo.git",
            local_path="/tmp/first-repo"
        )

        time.sleep(0.1)  # Small delay to ensure timestamp difference

        repo2 = service.create_repo(
            server_id=server.id,
            name="second-repo",
            full_name="owner/second-repo",
            clone_url="git@gitea.example.com:owner/second-repo.git",
            local_path="/tmp/second-repo"
        )

        repos = service.list_repos(server.id)

        assert repos[0].id == repo1.id
        assert repos[1].id == repo2.id


class TestGetRepo:
    """Tests for get_repo method."""

    def test_get_repo_by_id(self, db_session, test_env_vars):
        """Test getting a repo by ID."""
        server = create_test_server_with_repo(db_session)
        service = RepoService(db_session)

        created_repo = service.create_repo(
            server_id=server.id,
            name="get-test-repo",
            full_name="owner/get-test-repo",
            clone_url="git@gitea.example.com:owner/get-test-repo.git",
            local_path="/tmp/get-test-repo"
        )

        retrieved_repo = service.get_repo(created_repo.id)

        assert retrieved_repo is not None
        assert retrieved_repo.id == created_repo.id
        assert retrieved_repo.name == "get-test-repo"

    def test_get_repo_not_found(self, db_session, test_env_vars):
        """Test getting a non-existent repo."""
        service = RepoService(db_session)

        repo = service.get_repo(99999)

        assert repo is None


class TestUpdateRepoStatus:
    """Tests for update_repo_status method."""

    def test_update_repo_status_to_syncing(self, db_session, test_env_vars):
        """Test updating repo status to syncing."""
        server = create_test_server_with_repo(db_session)
        service = RepoService(db_session)

        repo = service.create_repo(
            server_id=server.id,
            name="status-repo",
            full_name="owner/status-repo",
            clone_url="git@gitea.example.com:owner/status-repo.git",
            local_path="/tmp/status-repo"
        )

        updated_repo = service.update_repo_status(repo.id, "syncing")

        assert updated_repo.status == "syncing"
        assert updated_repo.id == repo.id

    def test_update_repo_status_to_success(self, db_session, test_env_vars):
        """Test updating repo status to success."""
        server = create_test_server_with_repo(db_session)
        service = RepoService(db_session)

        repo = service.create_repo(
            server_id=server.id,
            name="status-repo",
            full_name="owner/status-repo",
            clone_url="git@gitea.example.com:owner/status-repo.git",
            local_path="/tmp/status-repo"
        )

        updated_repo = service.update_repo_status(repo.id, "success")

        assert updated_repo.status == "success"

    def test_update_repo_status_to_failed(self, db_session, test_env_vars):
        """Test updating repo status to failed."""
        server = create_test_server_with_repo(db_session)
        service = RepoService(db_session)

        repo = service.create_repo(
            server_id=server.id,
            name="status-repo",
            full_name="owner/status-repo",
            clone_url="git@gitea.example.com:owner/status-repo.git",
            local_path="/tmp/status-repo"
        )

        updated_repo = service.update_repo_status(repo.id, "failed")

        assert updated_repo.status == "failed"

    def test_update_repo_status_not_found(self, db_session, test_env_vars):
        """Test updating status for non-existent repo."""
        service = RepoService(db_session)

        with pytest.raises(ValueError, match="Repo not found"):
            service.update_repo_status(99999, "syncing")


class TestDeleteRepo:
    """Tests for delete_repo method."""

    def test_delete_repo_success(self, db_session, test_env_vars):
        """Test successful repo deletion."""
        server = create_test_server_with_repo(db_session)
        service = RepoService(db_session)

        repo = service.create_repo(
            server_id=server.id,
            name="delete-test-repo",
            full_name="owner/delete-test-repo",
            clone_url="git@gitea.example.com:owner/delete-test-repo.git",
            local_path="/tmp/delete-test-repo"
        )

        result = service.delete_repo(repo.id)

        assert result is True

        # Verify the repo is deleted
        retrieved_repo = service.get_repo(repo.id)
        assert retrieved_repo is None

    def test_delete_repo_not_found(self, db_session, test_env_vars):
        """Test deleting a non-existent repo."""
        service = RepoService(db_session)

        result = service.delete_repo(99999)

        assert result is False


class TestIntegration:
    """Integration tests for Repo service."""

    def test_repo_lifecycle(self, db_session, test_env_vars):
        """Test complete lifecycle of a repo."""
        server = create_test_server_with_repo(db_session)
        service = RepoService(db_session)

        # Create repo
        repo = service.create_repo(
            server_id=server.id,
            name="lifecycle-repo",
            full_name="owner/lifecycle-repo",
            clone_url="git@gitea.example.com:owner/lifecycle-repo.git",
            local_path="/tmp/lifecycle-repo"
        )
        assert repo.status == "pending"

        # Update status to syncing
        repo = service.update_repo_status(repo.id, "syncing")
        assert repo.status == "syncing"

        # Update status to success
        repo = service.update_repo_status(repo.id, "success")
        assert repo.status == "success"

        # Verify we can retrieve it
        retrieved = service.get_repo(repo.id)
        assert retrieved is not None
        assert retrieved.status == "success"

        # List repos for server
        repos = service.list_repos(server.id)
        assert len(repos) == 1
        assert repos[0].id == repo.id

        # Delete repo
        result = service.delete_repo(repo.id)
        assert result is True

        # Verify it's gone
        repos = service.list_repos(server.id)
        assert len(repos) == 0