# code_editor.py
import streamlit as st
import streamlit_ace as st_ace
from utils import execute_code

def render_code_editor(selected_lang, ace_theme, editor_key, default_snippet):
    st.subheader("Editor")

    code = st_ace.st_ace(
        value=st.session_state.code,
        placeholder=f"Start typing your {selected_lang} code…",
        language=selected_lang.lower() if selected_lang != "C++" else "c_cpp",
        theme=ace_theme,
        keybinding="vscode",
        font_size=14,
        min_lines=20,
        show_gutter=True,
        wrap=True,
        auto_update=True,
        key=editor_key
    )

    if code != st.session_state.code:
        st.session_state.code = code

    user_input = st.text_area(
        label="📥 Input (stdin)",
        value=st.session_state.stdin,
        placeholder="Enter input() values here, one per line",
        height=100,
        key="stdin_input"
    )
    if user_input != st.session_state.stdin:
        st.session_state.stdin = user_input

    if st.button("▶️ Run"):
        out, err, exc = execute_code(
            code=st.session_state.code,
            stdin=st.session_state.stdin,
            language=selected_lang
        )
        st.session_state.code_output = out
        st.session_state.error_output = err or exc

    if st.session_state.get("code_output"):
        st.text_area("Output", st.session_state.code_output, height=120)

    if st.session_state.get("error_output"):
        st.error(st.session_state.error_output)