"""Unit tests for project tools."""

import pytest
from app.tools.projects import (
    create_project, list_projects, join_project, check_project_id_available
)
from app.database import SessionLocal
from app.models import Project, ProjectMembership


class TestCheckProjectIdAvailable:
    """Test project ID availability checking."""

    def test_available_id(self, create_user):
        """Test checking an available project ID."""
        result = check_project_id_available("nonexistent-project")
        
        assert result["available"] == True
        assert result["project_id"] == "nonexistent-project"

    def test_unavailable_id(self, create_user):
        """Test checking an ID that's already taken."""
        user = create_user("Test", "User")
        
        # Create a project first
        create_project("takenid", "Description", user.id)
        
        # Check if the ID is available
        result = check_project_id_available("takenid")
        
        assert result["available"] == False
        assert result["project_id"] == "takenid"


class TestCreateProject:
    """Test project creation with name as ID."""

    def test_create_project_uses_name_as_id(self, create_user):
        """Test that project name is used as project ID."""
        user = create_user("Creator", "Test")
        
        result = create_project("fastgate", "A fast gateway", user.id)
        
        assert result["id"] == "fastgate"
        assert result["name"] == "fastgate"
        assert result["description"] == "A fast gateway"
        assert result["created_by"] == user.id

    def test_create_project_adds_owner_membership(self, create_user):
        """Test that creator is added as owner."""
        user = create_user("Owner", "Test")
        
        result = create_project("ownerproj", "Test", user.id)
        
        db = SessionLocal()
        try:
            membership = db.query(ProjectMembership).filter(
                ProjectMembership.project_id == result["id"],
                ProjectMembership.user_id == user.id
            ).first()
            
            assert membership is not None
            assert membership.role == "owner"
        finally:
            db.close()

    def test_create_project_duplicate_id_fails(self, create_user):
        """Test that creating project with existing ID fails."""
        user = create_user("Test", "User")
        
        # Create first project
        create_project("duplicate", "First project", user.id)
        
        # Try to create another with same name/ID
        result = create_project("duplicate", "Second project", user.id)
        
        assert "error" in result
        assert "already exists" in result["error"]

    def test_create_project_nonexistent_user(self):
        """Test creating project with non-existent user fails."""
        result = create_project("orphan", "No owner", "nonexistent-user-id")
        
        assert "error" in result
        assert "not found" in result["error"]


class TestListProjects:
    """Test listing user's projects."""

    def test_list_projects_empty(self, create_user):
        """Test listing projects for user with no projects."""
        user = create_user("New", "User")
        
        result = list_projects(user.id)
        
        assert "projects" in result
        assert len(result["projects"]) == 0

    def test_list_projects_with_owned_project(self, create_user):
        """Test listing projects includes owned projects."""
        user = create_user("Owner", "Test")
        create_project("ownedproj", "My project", user.id)
        
        result = list_projects(user.id)
        
        assert len(result["projects"]) == 1
        assert result["projects"][0]["name"] == "ownedproj"
        assert result["projects"][0]["role"] == "owner"

    def test_list_projects_with_member_project(self, create_user):
        """Test listing projects includes joined projects."""
        owner = create_user("Owner", "Test")
        member = create_user("Member", "Test")
        
        create_project("sharedproj", "Shared project", owner.id)
        join_project("sharedproj", member.id)
        
        result = list_projects(member.id)
        
        assert len(result["projects"]) == 1
        assert result["projects"][0]["name"] == "sharedproj"
        assert result["projects"][0]["role"] == "member"


class TestJoinProject:
    """Test joining existing projects."""

    def test_join_project_success(self, create_user):
        """Test successfully joining a project."""
        owner = create_user("Owner", "Test")
        member = create_user("Member", "Test")
        
        create_project("jointest", "Test project", owner.id)
        result = join_project("jointest", member.id)
        
        assert "message" in result
        assert result["project_id"] == "jointest"
        assert result["role"] == "member"

    def test_join_project_already_member(self, create_user):
        """Test joining a project you're already a member of."""
        owner = create_user("Owner", "Test")
        member = create_user("Member", "Test")
        
        create_project("alreadyin", "Test project", owner.id)
        join_project("alreadyin", member.id)
        
        # Try joining again
        result = join_project("alreadyin", member.id)
        
        assert "Already a member" in result.get("message", "")

    def test_join_nonexistent_project(self, create_user):
        """Test joining a project that doesn't exist."""
        user = create_user("User", "Test")
        
        result = join_project("doesnotexist", user.id)
        
        assert "error" in result
        assert "not found" in result["error"]

    def test_join_project_nonexistent_user(self, create_user):
        """Test joining with non-existent user."""
        owner = create_user("Owner", "Test")
        create_project("validproj", "Test", owner.id)
        
        result = join_project("validproj", "nonexistent-user")
        
        assert "error" in result
        assert "not found" in result["error"]