#!/usr/bin/env bash
set -euo pipefail

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'

info()    { echo -e "${GREEN}[BashyOverlay]${NC} $1"; }
warn()    { echo -e "${YELLOW}[BashyOverlay]${NC} $1"; }
error()   { echo -e "${RED}[BashyOverlay]${NC} $1"; exit 1; }

# ── Python version check ──────────────────────────────────────────────────────
PYTHON=$(command -v python3 || command -v python || error "Python not found")
PY_VER=$($PYTHON -c 'import sys; print(f"{sys.version_info.major}.{sys.version_info.minor}")')
PY_MAJOR=$($PYTHON -c 'import sys; print(sys.version_info.major)')
PY_MINOR=$($PYTHON -c 'import sys; print(sys.version_info.minor)')

if [ "$PY_MAJOR" -lt 3 ] || { [ "$PY_MAJOR" -eq 3 ] && [ "$PY_MINOR" -lt 10 ]; }; then
    error "Python 3.10+ required (found $PY_VER)"
fi
info "Python $PY_VER OK"

# ── Virtual environment ───────────────────────────────────────────────────────
if [ ! -d ".venv" ]; then
    info "Creating virtual environment..."
    $PYTHON -m venv .venv
fi

source .venv/bin/activate
info "Virtual environment active"

# ── Dependencies ──────────────────────────────────────────────────────────────
info "Installing dependencies..."
pip install -q --upgrade pip
pip install -q -r requirements.txt
info "Dependencies installed"

# ── .env ──────────────────────────────────────────────────────────────────────
if [ ! -f ".env" ]; then
    cp .env.example .env
    warn ".env created from .env.example"
    warn "Edit .env with your Twitch credentials before continuing."
    warn ""
    warn "  TWITCH_CLIENT_ID and TWITCH_CLIENT_SECRET:"
    warn "  Register an app at https://dev.twitch.tv/console/apps"
    warn "  Set OAuth Redirect URL to: http://localhost:8000/auth/callback"
    warn ""
    echo -n "Have you filled in .env? [y/N] "
    read -r answer
    if [[ ! "$answer" =~ ^[Yy]$ ]]; then
        warn "Edit .env and run deploy.sh again."
        exit 0
    fi
fi

# ── Media directory ───────────────────────────────────────────────────────────
mkdir -p static/media
info "Media directory ready"

# ── Launch ────────────────────────────────────────────────────────────────────
HOST="${HOST:-0.0.0.0}"
PORT="${PORT:-8000}"

info "Starting BashyOverlay at http://localhost:${PORT}"
info "Open that URL in your browser to log in with Twitch."
info "OBS browser source URL: http://localhost:${PORT}/overlay"
info ""
info "Press Ctrl+C to stop."
echo ""

exec uvicorn app.main:app --host "$HOST" --port "$PORT" --reload