import os
import sys
import time
import gradio as gr
from pathlib import Path
from loguru import logger
from huggingface_hub import whoami

from yourbench_space.config import generate_and_save_config
from yourbench_space.utils import (
    CONFIG_PATH,
    UPLOAD_DIRECTORY,
    SubprocessManager,
    save_files,
    STAGES,
)

project_description = """
# YourBench 🚀  
**Dynamic Benchmark Generation for Language Models**

Quickly create zero-shot benchmarks from your documents – keeping models accurate and adaptable
- 📖 [FAQ](#) 
- 💻 [GitHub](https://github.com/huggingface/yourbench/tree/v0.2-alpha-space)
"""


UPLOAD_DIRECTORY.mkdir(parents=True, exist_ok=True)

logger.remove()
logger.add(sys.stderr, level="INFO")

command = ["uv", "run", "yourbench", f"--config={CONFIG_PATH}"]
manager = SubprocessManager(command)

docs_path = Path(__file__).parent / "docs.md"
citation_content = (
    docs_path.read_text().split("# Citation")[-1].strip()
    if docs_path.exists()
    else "# Citation\n\nDocumentation file not found."
)


def generate_and_return(hf_org, hf_prefix):
    generate_and_save_config(hf_org, hf_prefix)
    for _ in range(5):
        if CONFIG_PATH.exists():
            break
        time.sleep(0.5)

    return (
        (
            "✅ Config saved!",
            gr.update(value=str(CONFIG_PATH), visible=True, interactive=True),
        )
        if CONFIG_PATH.exists()
        else (
            "❌ Config generation failed.",
            gr.update(visible=False, interactive=False),
        )
    )


def prepare_task(oauth_token: gr.OAuthToken | None, hf_dataset_prefix: str, _=None):
    new_env = os.environ.copy()
    if oauth_token:
        new_env["HF_TOKEN"] = oauth_token.token
    new_env["DATASET_PREFIX"] = hf_dataset_prefix
    manager.start_process(custom_env=new_env)


def update_hf_org_dropdown(oauth_token: gr.OAuthToken | None):
    if oauth_token is None:
        return gr.Dropdown([], label="Organization")

    try:
        user_info = whoami(oauth_token.token)
        org_names = [org["name"] for org in user_info.get("orgs", [])]
        user_name = user_info.get("name", "Unknown User")
        org_names.insert(0, user_name)
        return gr.Dropdown(org_names, value=user_name, label="Organization")

    except Exception as e:
        return gr.Dropdown([], label="Organization")


def switch_to_run_generation_tab():
    return gr.Tabs(selected=1)


def enable_button(files):
    return gr.update(interactive=bool(files))


with gr.Blocks(theme=gr.themes.Default()) as app:
    gr.Markdown(project_description)

    with gr.Row():
        gr.Markdown("## ⚙️ YourBench Setup", elem_id="setup-title")
        with gr.Column(scale=0, min_width=150):
            login_btn = gr.LoginButton()

    with gr.Tabs() as tabs:
        with gr.Tab("Setup", id=0):
            with gr.Row():
                with gr.Accordion("Hugging Face Settings"):
                    hf_org_dropdown = gr.Dropdown(
                        choices=[], label="Organization", allow_custom_value=True
                    )
                    app.load(
                        update_hf_org_dropdown, inputs=None, outputs=hf_org_dropdown
                    )

                    hf_dataset_prefix = gr.Textbox(
                        label="Dataset Prefix",
                        value="yourbench",
                        info="Prefix applied to all datasets",
                    )

                with gr.Accordion("Upload documents"):
                    file_input = gr.File(
                        label="Upload text files",
                        file_count="multiple",
                        file_types=[".txt", ".md", ".html"],
                    )
                    output = gr.Textbox(label="Log")
                    file_input.upload(
                        lambda files: save_files([file.name for file in files]),
                        file_input,
                        output,
                    )

            preview_button = gr.Button("Generate New Config", interactive=False)
            log_message = gr.Textbox(label="Log Message", visible=True)
            download_button = gr.File(
                label="Download Config", visible=False, interactive=False
            )

            file_input.change(enable_button, inputs=file_input, outputs=preview_button)

            preview_button.click(
                generate_and_return,
                inputs=[hf_org_dropdown, hf_dataset_prefix],
                outputs=[log_message, download_button],
            )
            preview_button.click(
                switch_to_run_generation_tab,
                inputs=None,
                outputs=tabs,
            )

        with gr.Tab("Run Generation", id=1):
            with gr.Row():
                with gr.Accordion("Log Output", open=True):
                    log_output = gr.Code(language=None, lines=20, interactive=False)

                with gr.Accordion("Stages", open=True):
                    stages_table = gr.CheckboxGroup(
                        choices=STAGES,
                        value=[],
                        label="Pipeline Stages Completed",
                        interactive=False,
                    )

            log_timer = gr.Timer(1.0, active=True)
            log_timer.tick(
                manager.read_and_get_output, outputs=[log_output, stages_table]
            )

            with gr.Row():
                process_status = gr.Checkbox(label="Process Status", interactive=False)
                status_timer = gr.Timer(1.0, active=True)
                status_timer.tick(manager.is_running, outputs=process_status)

            with gr.Row():
                start_button = gr.Button("Start Task")
                start_button.click(prepare_task, inputs=[login_btn, hf_dataset_prefix])

                stop_button = gr.Button("Stop Task")
                stop_button.click(manager.stop_process)

                kill_button = gr.Button("Kill Task")
                kill_button.click(manager.kill_process)

app.launch(allowed_paths=["/app"])