"""
Character Portrait Tab for D'n'D Campaign Manager
"""

import gradio as gr
from typing import Optional, Tuple
from src.agents.character_agent import CharacterAgent
from src.ui.components.dropdown_manager import DropdownManager


class CharacterPortraitTab:
    """Generate Portrait tab for AI character portrait generation"""

    def __init__(self, character_agent: CharacterAgent, dropdown_manager: DropdownManager):
        self.character_agent = character_agent
        self.dropdown_manager = dropdown_manager

    def generate_portrait_ui(
        self,
        character_id: str,
        style: str = "fantasy art",
        quality: str = "standard",
        provider: str = "auto"
    ) -> Tuple[Optional[str], str]:
        """
        Generate character portrait

        Returns:
            Tuple of (image_path, status_message)
        """
        try:
            if not character_id.strip():
                return None, "❌ Error: Please provide a character ID"

            # Load character
            character = self.character_agent.load_character(character_id)
            if not character:
                return None, f"❌ Character not found: {character_id}"

            # Generate portrait
            file_path, status = self.character_agent.generate_portrait(
                character=character,
                style=style,
                quality=quality,
                provider=provider
            )

            return file_path, status

        except Exception as e:
            import traceback
            error_msg = f"❌ Error generating portrait:\n\n{str(e)}\n\n{traceback.format_exc()}"
            return None, error_msg

    def create(self) -> gr.Dropdown:
        """Create and return the Generate Portrait tab component"""
        with gr.Tab("Generate Portrait"):
            gr.Markdown("""
            ### 🎨 AI Character Portrait Generator
            Generate stunning character portraits using DALL-E 3 or HuggingFace!
            """)

            with gr.Row():
                with gr.Column():
                    portrait_refresh_btn = gr.Button("🔄 Refresh Character List", variant="secondary")

                    portrait_character_dropdown = gr.Dropdown(
                        choices=[],
                        label="Select Character",
                        info="Choose a character to generate portrait for (type to search)",
                        allow_custom_value=False,
                        interactive=True
                    )

                    portrait_provider = gr.Radio(
                        choices=["auto", "openai", "huggingface"],
                        label="Image Provider",
                        value="auto",
                        info="Auto: Try OpenAI first, fallback to HuggingFace if needed"
                    )

                    portrait_style = gr.Dropdown(
                        choices=[
                            "fantasy art",
                            "digital painting",
                            "anime style",
                            "oil painting",
                            "watercolor",
                            "comic book art",
                            "concept art"
                        ],
                        label="Art Style",
                        value="fantasy art",
                        info="Choose the artistic style"
                    )

                    portrait_quality = gr.Radio(
                        choices=["standard", "hd"],
                        label="Image Quality (OpenAI only)",
                        value="standard",
                        info="HD costs more tokens (OpenAI only)"
                    )

                    generate_portrait_btn = gr.Button(
                        "🎨 Generate Portrait",
                        variant="primary",
                        size="lg"
                    )

                    portrait_status = gr.Textbox(
                        label="Status",
                        lines=4
                    )

                with gr.Column():
                    portrait_output = gr.Image(
                        label="Generated Portrait",
                        type="filepath",
                        height=512
                    )

            gr.Markdown("""
            **Providers:**
            - **OpenAI DALL-E 3**: High quality, costs $0.04/image (standard) or $0.08/image (HD)
            - **HuggingFace (Free!)**: Stable Diffusion XL, ~100 requests/day on free tier
            - **Auto**: Tries OpenAI first, automatically falls back to HuggingFace if billing issues

            Portraits are automatically saved to `data/portraits/` directory.

            **Tips:**
            - Use "auto" mode for seamless fallback
            - OpenAI HD quality produces better results but costs 2x
            - HuggingFace is free but may have a 30-60s warm-up time
            - Different styles work better for different races/classes
            """)

            # Refresh portrait character dropdown
            portrait_refresh_btn.click(
                fn=self.dropdown_manager.refresh_character_dropdown,
                inputs=[],
                outputs=[portrait_character_dropdown]
            )

            # Generate portrait action - convert dropdown label to ID
            def generate_portrait_from_dropdown(label, style, quality, provider):
                char_id = self.dropdown_manager.get_character_id_from_label(label)
                return self.generate_portrait_ui(char_id, style, quality, provider)

            generate_portrait_btn.click(
                fn=generate_portrait_from_dropdown,
                inputs=[portrait_character_dropdown, portrait_style, portrait_quality, portrait_provider],
                outputs=[portrait_output, portrait_status]
            )

        # Return the dropdown for auto-population
        return portrait_character_dropdown