import gradio as gr
import requests
import json
from huggingface_hub import (
    create_repo,
    list_models,
    upload_file,
    constants,
)
from huggingface_hub.utils import build_hf_headers, get_session, hf_raise_for_status

# — USER INFO & MODEL LISTING —

def show_profile(profile: gr.OAuthProfile | None) -> str:
    if profile is None:
        return "*Not logged in.*"
    return f"✅ Logged in as **{profile.username}**"

def list_private_models(
    profile: gr.OAuthProfile | None,
    oauth_token: gr.OAuthToken | None
) -> str:
    if profile is None or oauth_token is None:
        return "Please log in to see your models."
    models = [
        f"{m.id} ({'private' if m.private else 'public'})"
        for m in list_models(author=profile.username, token=oauth_token.token)
    ]
    return "No models found." if not models else "Models:\n\n" + "\n - ".join(models)

# — BUTTON‑ENABLING HELPERS —

def enable_create(
    profile: gr.OAuthProfile | None,
    oauth_token: gr.OAuthToken | None
):
    return gr.update(interactive=profile is not None)

def enable_repo_actions(
    repo_id: str,
    profile: gr.OAuthProfile | None,
    oauth_token: gr.OAuthToken | None
):
    return gr.update(interactive=bool(repo_id and profile and oauth_token))

# — CORE ACTIONS —

def create_space(
    repo_name: str,
    sdk: str,
    profile: gr.OAuthProfile | None,
    oauth_token: gr.OAuthToken | None
) -> tuple[str, str, str]:
    if not profile or not oauth_token:
        return "", "⚠️ Please log in first.", "<p>No Space created yet.</p>"
    repo_id = f"{profile.username}/{repo_name}"
    create_repo(
        repo_id=repo_id,
        token=oauth_token.token,
        exist_ok=True,
        repo_type="space",
        space_sdk=sdk
    )
    url    = f"https://huggingface.co/spaces/{repo_id}"
    logmsg = f"✅ Space ready: {url} (SDK: {sdk})"
    iframe = f'<iframe src="{url}" width="100%" height="500px"></iframe>'
    return repo_id, logmsg, iframe

def upload_file_to_space(
    file,
    path_in_repo: str,
    repo_id: str,
    profile: gr.OAuthProfile | None,
    oauth_token: gr.OAuthToken | None
) -> str:
    if not profile or not oauth_token:
        return "⚠️ Please log in first."
    if not repo_id:
        return "⚠️ Please create a Space first."
    if not file:
        return "⚠️ No file selected."
    upload_file(
        path_or_fileobj=file.name,
        path_in_repo=path_in_repo,
        repo_id=repo_id,
        token=oauth_token.token,
        repo_type="space"
    )
    return f"✅ Uploaded {path_in_repo} to {repo_id}"

def _fetch_space_logs_level(repo_id: str, level: str) -> str:
    # 1) Get SSE JWT
    jwt_url = f"{constants.ENDPOINT}/api/spaces/{repo_id}/jwt"
    r = get_session().get(jwt_url, headers=build_hf_headers())
    hf_raise_for_status(r)
    jwt = r.json()["token"]
    # 2) Stream logs
    logs_url = f"https://api.hf.space/v1/{repo_id}/logs/{level}"
    lines = []
    with get_session().get(logs_url, headers=build_hf_headers(token=jwt), stream=True) as resp:
        hf_raise_for_status(resp)
        for raw in resp.iter_lines():
            if not raw.startswith(b"data: "):
                continue
            payload = raw[len(b"data: "):]
            try:
                event = json.loads(payload.decode())
            except json.JSONDecodeError:
                continue
            ts  = event.get("timestamp", "")
            txt = event.get("data", "")
            lines.append(f"[{ts}] {txt}")
    return "\n".join(lines)

def get_build_logs(
    repo_id: str,
    profile: gr.OAuthProfile | None,
    oauth_token: gr.OAuthToken | None
) -> str:
    if not (profile and oauth_token and repo_id):
        return "⚠️ Please log in and create a Space first."
    return _fetch_space_logs_level(repo_id, "build")

def get_container_logs(
    repo_id: str,
    profile: gr.OAuthProfile | None,
    oauth_token: gr.OAuthToken | None
) -> str:
    if not (profile and oauth_token and repo_id):
        return "⚠️ Please log in and create a Space first."
    return _fetch_space_logs_level(repo_id, "run")

# — BUILD THE UI —

with gr.Blocks(title="HF OAuth + Space Manager with Logs") as demo:
    gr.Markdown(
        "## Sign in with Hugging Face + Manage Your Space\n\n"
        "1. Sign in\n"
        "2. Create a Space (Gradio/Streamlit)\n"
        "3. Upload files to it\n"
        "4. Fetch build and container logs\n\n"
        "---"
    )

    # — LOGIN & MODEL LIST —
    login_btn = gr.LoginButton(variant="huggingface", size="lg")
    status_md = gr.Markdown("*Not logged in.*")
    models_md = gr.Markdown()
    demo.load(show_profile,         inputs=None, outputs=status_md)
    login_btn.click(show_profile,   inputs=None, outputs=status_md)
    demo.load(list_private_models,  inputs=None, outputs=models_md)
    login_btn.click(list_private_models,
                    inputs=None,     outputs=models_md)

    # — CREATE SPACE —
    repo_name    = gr.Textbox(label="New Space name", placeholder="my-space")
    sdk_selector = gr.Radio(
        choices=["gradio","streamlit"],
        value="gradio",
        label="Space template (SDK)"
    )
    create_btn   = gr.Button("Create Space", interactive=False)
    session_id   = gr.Textbox(visible=False)
    create_logs  = gr.Textbox(label="Create Logs", interactive=False, lines=3)
    preview      = gr.HTML("<p>No Space created yet.</p>")

    demo.load(enable_create,        inputs=None,        outputs=[create_btn])
    login_btn.click(enable_create,  inputs=None,        outputs=[create_btn])

    create_btn.click(
        fn=create_space,
        inputs=[repo_name, sdk_selector],
        outputs=[session_id, create_logs, preview]
    )

    # — UPLOAD FILES —
    path_in_repo  = gr.Textbox(label="Path in Space", value="app.py")
    file_uploader = gr.File(label="Select file")
    upload_btn    = gr.Button("Upload File", interactive=False)
    upload_logs   = gr.Textbox(label="Upload Logs", interactive=False, lines=2)

    demo.load(enable_repo_actions,
              inputs=[session_id],
              outputs=[upload_btn])
    login_btn.click(enable_repo_actions,
                    inputs=[session_id],
                    outputs=[upload_btn])
    session_id.change(enable_repo_actions,
                      inputs=[session_id],
                      outputs=[upload_btn])

    upload_btn.click(
        fn=upload_file_to_space,
        inputs=[file_uploader, path_in_repo, session_id],
        outputs=[upload_logs]
    )

    # — FETCH BUILD & CONTAINER LOGS —
    build_logs_btn     = gr.Button("Get Build Logs", interactive=False)
    container_logs_btn = gr.Button("Get Container Logs", interactive=False)
    build_logs_md      = gr.Textbox(label="Build Logs", interactive=False, lines=10)
    container_logs_md  = gr.Textbox(label="Container Logs", interactive=False, lines=10)

    # enable both log buttons
    for btn in (build_logs_btn, container_logs_btn):
        demo.load(enable_repo_actions,
                  inputs=[session_id],
                  outputs=[btn])
        login_btn.click(enable_repo_actions,
                        inputs=[session_id],
                        outputs=[btn])
        session_id.change(enable_repo_actions,
                          inputs=[session_id],
                          outputs=[btn])

    build_logs_btn.click(
        fn=get_build_logs,
        inputs=[session_id],
        outputs=[build_logs_md]
    )
    container_logs_btn.click(
        fn=get_container_logs,
        inputs=[session_id],
        outputs=[container_logs_md]
    )

if __name__ == "__main__":
    demo.launch()