import logging
import random
import time

import gradio as gr
from tqdm import tqdm

from gradio_logsview import LogsView, LogsViewRunner

logger = logging.getLogger("custom.foo")

def random_values(failing: bool = False):
    for i in tqdm(range(10)):
        logger.log(
            random.choice(
                [  # Random levels
                    logging.INFO,
                    logging.DEBUG,
                    logging.WARNING,
                    logging.ERROR,
                    logging.CRITICAL,
                ]
            ),
            f"Value {i+1}",  # Random values
        )
        time.sleep(random.uniform(0, 1))
        if failing and i == 5:
            raise ValueError("Failing!!")


def fn_command_success():
    runner = LogsViewRunner()
    yield from runner.run_command(["python", "-u", "demo/script.py"])
    yield runner.log(f"Runner: {runner}")


def fn_command_failing():
    runner = LogsViewRunner()
    yield from runner.run_command(["python", "-u", "demo/script.py", "--failing"])
    yield runner.log(f"Runner: {runner}")


def fn_python_success():
    runner = LogsViewRunner()
    yield from runner.run_python(random_values, log_level=logging.INFO, logger_name="custom.foo", failing=False)
    yield runner.log(f"Runner: {runner}")


def fn_python_failing():
    runner = LogsViewRunner()
    yield from runner.run_python(random_values, log_level=logging.INFO, logger_name="custom.foo", failing=True)
    yield runner.log(f"Runner: {runner}")


markdown_top = """
# LogsView Demo

This demo shows how to use the `LogsView` component to run some Python code or execute a command and display logs in real-time.

Click on any button to launch a process and see the logs displayed in real-time.
In the Python examples, code is executed in a process. You can see the logs (generated randomly with different log levels).
In the command examples, the command line is executed on the system directly. Any command can be executed.
"""


markdown_bottom = """
## Installation

```
pip install https://huggingface.co/spaces/Wauplin/gradio_logsview/resolve/main/gradio_logsview-0.0.5-py3-none-any.whl
```

or add this line to your `requirements.txt`:

```
gradio_logsview@https://huggingface.co/spaces/Wauplin/gradio_logsview/resolve/main/gradio_logsview-0.0.5-py3-none-any.whl
```

## How to run Python code?

With `LogsView.run_python`, you can run Python code in a separate process and capture logs in real-time.
You can configure which logs to capture (log level and logger name).

```py
from gradio_logsview import LogsView

def fn_python():
    # Run `my_function` in a separate process
    # All logs above `INFO` level will be captured and displayed in real-time.
    runner = LogsViewRunner() # Initialize the runner
    yield from runner.run_python(my_function, log_level=logging.INFO, arg1="value1")
    yield runner.log(f"Runner: {runner}") # Log any message
    if runner.exit_code != 0:
        # Handle error
        ...

with gr.Blocks() as demo:
    logs = LogsView()
    btn = gr.Button("Run Python code")
    btn.click(fn_python, outputs=logs)
```

## How to run a command?

With `LogsView.run_command`, you can run a command on the system and capture logs from the process in real-time.
    
```py
from gradio_logsview import LogsView

def fn_command():
    # Run a command and capture all logs from the subprocess
    runner = LogsViewRunner() # Initialize the runner
    yield from runner.run_command(
        ["mergekit-yaml", "config.yaml", "merge", "--copy-", "--cuda", "--low-cpu-memory"]
    )
    yield runner.log(f"Runner: {runner}") # Log any message
    if runner.exit_code != 0:
        # Handle error
        ...

with gr.Blocks() as demo:
    logs = LogsView()
    btn = gr.Button("Run command")
    btn.click(fn_command, outputs=logs)
```

## TODO

- [ ] display logs with colors (front-end)
- [ ] format logs client-side (front-end)
- [ ] scrollable logs if more than N lines (front-end)
- [ ] format each log only once (front-end)
- [x] stop process if `run_command` gets cancelled (back-end)
- [x] correctly pass error stacktrace in `run_python` (back-end)
- [x] correctly catch print statements in `run_python` (back-end)
- [ ] disable interactivity + remove all code editing logic (both?)
- [x] how to handle progress bars? (i.e when logs are overwritten in terminal)
- [ ] Have 3 tabs in UI for stdout, stderr and logging (front-end + back-end)
- [ ] Write logger name in the logs (back-end)
"""

with gr.Blocks() as demo:
    gr.Markdown(markdown_top)

    with gr.Row():
        btn_python_success = gr.Button("Run Python code (success)")
        btn_python_failing = gr.Button("Run Python code (failing)")
    with gr.Row():
        btn_command_success = gr.Button("Run command (success)")
        btn_command_failing = gr.Button("Run command (failing)")
    logs = LogsView()

    gr.Markdown(markdown_bottom)

    btn_python_failing.click(fn_python_failing, outputs=logs)
    btn_python_success.click(fn_python_success, outputs=logs)
    btn_command_failing.click(fn_command_failing, outputs=logs)
    btn_command_success.click(fn_command_success, outputs=logs)


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