import gradio as gr
from .config import FEATURE_SEQUENCE, SECTIONS, HF_TEXT_MODELS, HF_IMAGE_MODELS, GEMINI_API_KEY
from .core_logic import (
    features_data, generate_prompt, handle_regeneration, 
    save_character, load_character, get_example_list, load_example_character
)
from .integrations import (
    get_ollama_models, check_comfy_availability, refine_master, generate_image_master
)
from .name_generator import generate_fantasy_name

UI_CSS = """
    .container span { 
        line-height: 1.6 !important; 
        margin-bottom: 8px !important; 
        display: inline-block !important;
    }
    .container textarea { 
        min-height: 42px !important; 
        line-height: 1.5 !important;
        overflow-y: visible !important;
        padding-top: 8px !important;
        padding-bottom: 8px !important;
    }
    /* Firefox specific fixes */
    @-moz-document url-prefix() {
        .container textarea {
            padding-top: 10px !important;
            padding-bottom: 10px !important;
        }
        .container span {
            padding-bottom: 2px !important;
        }
    }
"""

def build_ui():
    with gr.Blocks(title="Chronicle Portrait Studio") as demo:
        with gr.Row(variant="compact"):
            gr.HTML('''
            <div style="display: flex; justify-content: center; background: #121212; padding: 10px; border-radius: 10px;">
                <svg width="600" height="120" viewBox="0 0 600 120" xmlns="http://www.w3.org/2000/svg">
                  <defs>
                    <linearGradient id="goldGrad" x1="0%" y1="0%" x2="0%" y2="100%">
                      <stop offset="0%" style="stop-color:#FFD700;stop-opacity:1" />
                      <stop offset="100%" style="stop-color:#B8860B;stop-opacity:1" />
                    </linearGradient>
                    <filter id="shadow" x="-20%" y="-20%" width="140%" height="140%">
                      <feGaussianBlur in="SourceAlpha" stdDeviation="2" />
                      <feOffset dx="2" dy="2" result="offsetblur" />
                      <feComponentTransfer>
                        <feFuncA type="linear" slope="0.5" />
                      </feComponentTransfer>
                      <feMerge>
                        <feMergeNode />
                        <feMergeNode in="SourceGraphic" />
                      </feMerge>
                    </filter>
                  </defs>
                  <rect width="600" height="120" fill="#121212" rx="10" />
                  <g transform="translate(60, 60)" filter="url(#shadow)">
                    <path d="M0 -35 L25 -25 L25 5 Q25 25 0 35 Q-25 25 -25 5 L-25 -25 Z" fill="url(#goldGrad)" opacity="0.9" />
                    <path d="M0 -30 L20 -22 L20 5 Q20 20 0 30 Q-20 20 -20 5 L-20 -22 Z" fill="#121212" />
                    <text x="0" y="10" font-family="serif" font-size="28" fill="url(#goldGrad)" text-anchor="middle" font-weight="bold">C</text>
                  </g>
                  <text x="340" y="62" font-family="'Georgia', serif" font-size="42" fill="url(#goldGrad)" style="filter:url(#shadow)" font-weight="bold" text-anchor="middle">CHRONICLE</text>
                  <text x="340" y="98" font-family="'Georgia', serif" font-size="20" fill="#bdc3c7" letter-spacing="2" opacity="0.8" text-anchor="middle">PORTRAIT STUDIO</text>
                  <rect x="5" y="5" width="590" height="110" fill="none" stroke="#B8860B" stroke-width="1" rx="8" stroke-dasharray="15,10" opacity="0.3" />
                </svg>
            </div>
            ''')
        
        gr.Markdown("# ⚔️ Chronicle Portrait Studio")
        gr.Markdown("Craft legendary AI-powered portraits for your RPG adventures.")

        dropdowns = []
        checkboxes = []
        extra_texts = []

        def create_feature_ui(category, subcategory, label, default_value):
            choices = list(features_data[category][subcategory].keys())
            gr.Markdown(f"**{label}**")
            with gr.Row(equal_height=True):
                dd = gr.Dropdown(choices=choices, value=default_value, scale=12, show_label=False)
                cb = gr.Checkbox(label="🎲", value=False, scale=1, min_width=50, container=False)
            dropdowns.append(dd)
            checkboxes.append(cb)
            return dd, cb

        with gr.Row():
            with gr.Column(scale=2):
                with gr.Tabs():
                    with gr.TabItem("👤 Identity & Expression"):
                        gr.Markdown("### 👤 Identity")
                        with gr.Row():
                            character_name = gr.Textbox(label="Character Name", placeholder="Enter name...", value="Unnamed Hero", scale=9)
                            name_gen_btn = gr.Button("🎲", scale=1, variant="secondary")
                        race_dd, _ = create_feature_ui('identity', 'race', "Race", "Human")
                        create_feature_ui('identity', 'class', "Class", "Fighter")
                        create_feature_ui('identity', 'gender', "Gender", "Male")
                        create_feature_ui('identity', 'age', "Age", "Young Adult")
                        extra_id = gr.Textbox(placeholder="Extra Identity details (e.g. lineage, title)", label="Additional Identity Info")
                        extra_texts.append(extra_id)
                        
                        gr.Markdown("### 🎭 Expression & Pose")
                        create_feature_ui('expression_pose', 'expression', "Expression", "Determined")
                        create_feature_ui('expression_pose', 'pose', "Pose", "Standing")

                    with gr.TabItem("🎨 Appearance"):
                        gr.Markdown("### 🎨 Appearance")
                        create_feature_ui('appearance', 'hair_color', "Hair Color", "Brown")
                        create_feature_ui('appearance', 'hair_style', "Hair Style", "Short")
                        create_feature_ui('appearance', 'eye_color', "Eye Color", "Brown")
                        create_feature_ui('appearance', 'build', "Build", "Average")
                        create_feature_ui('appearance', 'skin_tone', "Skin Tone", "Fair")
                        create_feature_ui('appearance', 'distinguishing_feature', "Distinguishing Feature", "None")
                        extra_app = gr.Textbox(placeholder="Extra Appearance details (e.g. tattoos, scars)", label="Additional Appearance Info")
                        extra_texts.append(extra_app)

                    with gr.TabItem("⚔️ Equipment"):
                        gr.Markdown("### ⚔️ Equipment")
                        create_feature_ui('equipment', 'armor', "Armor/Clothing", "Travelers Clothes")
                        create_feature_ui('equipment', 'weapon', "Primary Weapon", "Longsword")
                        create_feature_ui('equipment', 'accessory', "Accessory 1", "None")
                        create_feature_ui('equipment', 'accessory', "Accessory 2", "None")
                        create_feature_ui('equipment', 'material', "Material Detail", "Weathered")
                        extra_eq = gr.Textbox(placeholder="Extra Equipment details (e.g. weapon enchantments)", label="Additional Equipment Info")
                        extra_texts.append(extra_eq)

                    with gr.TabItem("🌍 Environment"):
                        gr.Markdown("### 🌍 Environment")
                        create_feature_ui('environment', 'background', "Background", "Forest")
                        create_feature_ui('environment', 'lighting', "Lighting", "Natural Sunlight")
                        create_feature_ui('environment', 'atmosphere', "Atmosphere", "Clear")
                        extra_env = gr.Textbox(placeholder="Extra Environment details (e.g. time of day, weather)", label="Additional Environment Info")
                        extra_texts.append(extra_env)

                    with gr.TabItem("🪄 Style & Technical"):
                        gr.Markdown("### 🪄 Style & Effects")
                        create_feature_ui('vfx_style', 'vfx', "Special Effects", "None")
                        create_feature_ui('vfx_style', 'style', "Art Style", "Digital Illustration")
                        create_feature_ui('vfx_style', 'mood', "Mood", "Heroic")
                        create_feature_ui('vfx_style', 'camera', "Camera Angle", "Bust")
                        extra_sty = gr.Textbox(placeholder="Extra Style details (e.g. specific artists, colors)", label="Additional Style Info")
                        extra_texts.append(extra_sty)
                        
                        gr.Markdown("### ⚙️ Technical")
                        create_feature_ui('technical', 'aspect_ratio', "Aspect Ratio", "1:1")

                gr.Markdown("---")
                
                with gr.Row():
                    example_dropdown = gr.Dropdown(choices=get_example_list(), label="Example Characters", scale=3)
                    load_example_btn = gr.Button("📂 Load Example", variant="secondary", scale=1)
                    save_btn = gr.Button("💾 Save Character", variant="secondary", scale=1)
                    load_btn = gr.UploadButton("📂 Load Character", file_types=[".json"], variant="secondary", scale=1)
                
                with gr.Group():
                    gr.Markdown("### ⚙️ AI Backend Configuration")
                    with gr.Row():
                        ollama_models = get_ollama_models()
                        ollama_active = len(ollama_models) > 0
                        comfy_active = check_comfy_availability()
                        
                        refinement_choices = ["Hugging Face (Cloud)"]
                        if GEMINI_API_KEY:
                            refinement_choices.insert(0, "Gemini (Cloud)")
                        if ollama_active:
                            refinement_choices.append("Ollama (Local)")
                            
                        refinement_backend = gr.Radio(
                            choices=refinement_choices,
                            value=refinement_choices[0],
                            label="Prompt Refinement Backend",
                            scale=2
                        )
                        
                        with gr.Column(scale=1):
                            ollama_model_dropdown = gr.Dropdown(
                                choices=ollama_models,
                                value=ollama_models[0] if ollama_active else None,
                                label="Olama Model",
                                visible=False
                            )
                            hf_text_model_dropdown = gr.Dropdown(
                                choices=HF_TEXT_MODELS,
                                value=HF_TEXT_MODELS[0],
                                label="HF Text Model",
                                visible=("Hugging Face (Cloud)" in refinement_choices and refinement_choices[0] == "Hugging Face (Cloud)")
                            )
                            hf_text_provider_input = gr.Textbox(
                                value="auto",
                                placeholder="Optional: e.g. fal-ai",
                                label="HF Text Provider",
                                visible=("Hugging Face (Cloud)" in refinement_choices and refinement_choices[0] == "Hugging Face (Cloud)")
                            )
                    
                    with gr.Row():
                        img_choices = ["Hugging Face (Cloud)"]
                        if GEMINI_API_KEY:
                            img_choices.insert(0, "Gemini (Cloud)")
                        if comfy_active:
                            img_choices.append("ComfyUI (Local)")
                            
                        backend_selector = gr.Radio(
                            choices=img_choices, 
                            value=img_choices[0], 
                            label="Image Generation Backend",
                            scale=2
                        )
                        with gr.Column(scale=1):
                            hf_image_model_dropdown = gr.Dropdown(
                                choices=HF_IMAGE_MODELS,
                                value=HF_IMAGE_MODELS[0],
                                label="HF Image Model",
                                visible=("Hugging Face (Cloud)" in img_choices and img_choices[0] == "Hugging Face (Cloud)")
                            )
                            hf_image_provider_input = gr.Textbox(
                                value="auto",
                                placeholder="Optional: e.g. fal-ai",
                                label="HF Image Provider",
                                visible=("Hugging Face (Cloud)" in img_choices and img_choices[0] == "Hugging Face (Cloud)")
                            )

                    with gr.Row():
                        with gr.Column(scale=1):
                            hf_login = gr.LoginButton()
                            gr.Markdown("*Note: HF Login is disabled in 'shared' mode. Use an individual token for remote access.*")
                        with gr.Column(scale=2):
                            hf_token_input = gr.Textbox(
                                label="Individual Hugging Face Token (Optional)",
                                placeholder="Paste your hf_... token here for custom rate limits",
                                type="password"
                            )

            with gr.Column(scale=1):
                gr.Markdown("### 📝 Prompts & Output")
                prompt_output = gr.Textbox(label="Generated Technical Prompt", lines=4, interactive=False, buttons=["copy"])
                refine_btn = gr.Button("🧠 Refine Prompt", variant="primary")
                regenerate_btn = gr.Button("✨ Randomize Features", variant="secondary")
                refined_output = gr.Textbox(label="Refined Artistic Prompt", lines=6, interactive=True, buttons=["copy", "paste", "clear"])
                
                gr.Markdown("---")
                image_output = gr.Image(label="Portrait", show_label=False)
                gen_img_btn = gr.Button("🖼️ Generate Image", variant="primary", scale=1)
                download_img_btn = gr.DownloadButton("📥 Download Portrait (PNG)", variant="secondary", visible=False)
                status_msg = gr.Markdown("")
                download_file = gr.File(label="Saved Character JSON", visible=False)

        all_input_components = [character_name] + dropdowns + checkboxes + extra_texts
        
        for comp in all_input_components:
            comp.change(fn=generate_prompt, inputs=all_input_components, outputs=prompt_output)
        
        regenerate_btn.click(
            fn=handle_regeneration,
            inputs=dropdowns + checkboxes,
            outputs=dropdowns
        ).then(
            fn=generate_prompt,
            inputs=all_input_components,
            outputs=prompt_output
        ).then(
            fn=lambda: "",
            outputs=refined_output
        )

        name_gen_btn.click(
            fn=lambda r: generate_fantasy_name(r),
            inputs=[race_dd],
            outputs=character_name
        )

        refine_btn.click(
            fn=refine_master,
            inputs=[prompt_output, refinement_backend, ollama_model_dropdown, hf_text_model_dropdown, hf_text_provider_input, hf_token_input, character_name],
            outputs=[refined_output, status_msg]
        )

        gen_img_btn.click(
            fn=generate_image_master,
            inputs=[refined_output, prompt_output, dropdowns[-1], backend_selector, hf_image_model_dropdown, hf_image_provider_input, hf_token_input, character_name],
            outputs=[image_output, download_img_btn, status_msg]
        ).then(
            fn=lambda x: gr.update(value=x, visible=True) if x else gr.update(visible=False),
            inputs=download_img_btn,
            outputs=download_img_btn
        )

        refinement_backend.change(
            fn=lambda b: (
                gr.update(visible=(b == "Ollama (Local)")), 
                gr.update(visible=(b == "Hugging Face (Cloud)")),
                gr.update(visible=(b == "Hugging Face (Cloud)"))
            ),
            inputs=refinement_backend,
            outputs=[ollama_model_dropdown, hf_text_model_dropdown, hf_text_provider_input]
        )

        backend_selector.change(
            fn=lambda b: (
                gr.update(visible=(b == "Hugging Face (Cloud)")),
                gr.update(visible=(b == "Hugging Face (Cloud)"))
            ),
            inputs=backend_selector,
            outputs=[hf_image_model_dropdown, hf_image_provider_input]
        )

        save_btn.click(
            fn=save_character,
            inputs=all_input_components,
            outputs=download_file
        ).then(
            fn=lambda: gr.update(visible=True),
            outputs=download_file
        )

        load_btn.upload(
            fn=load_character,
            inputs=load_btn,
            outputs=all_input_components
        ).then(
            fn=generate_prompt,
            inputs=all_input_components,
            outputs=prompt_output
        ).then(
            fn=lambda: "",
            outputs=refined_output
        )

        load_example_btn.click(
            fn=load_example_character,
            inputs=example_dropdown,
            outputs=all_input_components
        ).then(
            fn=generate_prompt,
            inputs=all_input_components,
            outputs=prompt_output
        ).then(
            fn=lambda: "",
            outputs=refined_output
        )
        
        demo.load(fn=generate_prompt, inputs=all_input_components, outputs=prompt_output)

    return demo