"""CVAT API project methods."""

from __future__ import annotations

from typing import TYPE_CHECKING

from metrics_evaluation.schema.cvat import CvatApiLabelDefinition, CvatApiProjectDetails

from .retry import retry_with_backoff

# TYPE_CHECKING is False at runtime but True during static type checking.
# This allows us to import CvatApiClient for type hints without creating a circular
# import (client.py imports ProjectsMethods, and we need CvatApiClient for type hints).
# Benefits:
# - Avoids circular import errors at runtime
# - Provides proper type checking during development
# - No performance overhead (import only happens during type checking, not at runtime)
# This is a recommended pattern in modern Python (PEP 484, PEP 563).
# -- Claude Code
if TYPE_CHECKING:
    from .client import CvatApiClient


class ProjectsMethods:
    """Project-level operations for CVAT API."""

    def __init__(self, client: "CvatApiClient"):
        """Initialize project methods with client reference.

        Args:
            client: Parent CvatApiClient instance
        """
        self.client = client

    @retry_with_backoff(max_retries=3, initial_delay=1.0)
    def list(self, token: str | None = None) -> list[CvatApiProjectDetails]:
        """List all projects accessible to the user.

        Args:
            token: Authentication token (optional)

        Returns:
            List of project details objects
        """
        headers = self.client._get_headers(token)
        url = f"{self.client.cvat_host}/api/projects?page_size=1000"

        response = self.client._make_request(
            method="GET",
            url=url,
            headers=headers,
            resource_name="projects list",
        )

        response_data = response.json()
        return [
            CvatApiProjectDetails.model_validate(project)
            for project in response_data.get("results", [])
        ]

    @retry_with_backoff(max_retries=3, initial_delay=1.0)
    def get_project_details(
        self, project_id: int, token: str | None = None
    ) -> CvatApiProjectDetails:
        """Fetch project details.

        Args:
            project_id: The ID of the project
            token: Authentication token (optional)

        Returns:
            Project details object
        """
        headers = self.client._get_headers(token)
        url = f"{self.client.cvat_host}/api/projects/{project_id}"

        return self.client._make_request(
            method="GET",
            url=url,
            headers=headers,
            resource_name="project",
            resource_id=project_id,
            response_model=CvatApiProjectDetails,
        )

    @retry_with_backoff(max_retries=3, initial_delay=1.0)
    def get_project_labels(
        self, project_id: int, token: str | None = None
    ) -> list[CvatApiLabelDefinition]:
        """Fetch labels for a project.

        Args:
            project_id: The ID of the project
            token: Authentication token (optional)

        Returns:
            List of label definitions
        """
        headers = self.client._get_headers(token)
        url = f"{self.client.cvat_host}/api/labels?project_id={project_id}&page_size=1000"

        response = self.client._make_request(
            method="GET",
            url=url,
            headers=headers,
            resource_name="project labels",
            resource_id=project_id,
        )

        response_data = response.json()
        return [
            CvatApiLabelDefinition.model_validate(label)
            for label in response_data.get("results", [])
        ]

    @retry_with_backoff(max_retries=3, initial_delay=1.0)
    def get_project_job_ids(
        self, project_id: int, token: str | None = None
    ) -> list[int]:
        """Fetch all job IDs associated with a project.

        Args:
            project_id: The ID of the project
            token: Authentication token (optional)

        Returns:
            List of job IDs
        """
        from metrics_evaluation.schema.cvat import CvatApiJobsListResponse

        headers = self.client._get_headers(token)
        url = f"{self.client.cvat_host}/api/jobs?project_id={project_id}&page_size=1000&org={self.client.cvat_organization}"

        response = self.client._make_request(
            method="GET",
            url=url,
            headers=headers,
            resource_name="project jobs",
            resource_id=project_id,
            response_model=CvatApiJobsListResponse,
        )

        return [job.id for job in response.results]

    @retry_with_backoff(max_retries=3, initial_delay=1.0)
    def get_project_tasks(self, project_id: int, token: str | None = None) -> list[int]:
        """Fetch all task IDs for a project.

        Args:
            project_id: The ID of the project
            token: Authentication token (optional)

        Returns:
            List of task IDs
        """
        headers = self.client._get_headers(token)
        url = f"{self.client.cvat_host}/api/tasks?project_id={project_id}&page_size=1000"

        response = self.client._make_request(
            method="GET",
            url=url,
            headers=headers,
            resource_name="project tasks",
            resource_id=project_id,
        )

        response_data = response.json()
        return [task["id"] for task in response_data.get("results", [])]