#!/usr/bin/env bash
# google.sh — Claude Code → Google Gemini
# Usage:
#   curl -fsSL "https://get.organat.vn/google.sh" | bash
#   curl -fsSL "https://get.organat.vn/google.sh" | bash -s -- "YOUR_API_KEY"
#   ANTHROPIC_API_KEY=... bash google.sh

set -euo pipefail
trap 'echo ""; echo -e "\033[0;31mInterrupted\033[0m"; exit 130' INT TERM

# ── Config ──────────────────────────────────────────────────────────────────
DEFAULT_API_KEY="AIzaSyBChhE2MQTx-at7v3WKipkRHK7Lb3ACcYM"
DEFAULT_BASE_URL="https://generativelanguage.googleapis.com/v1beta/openai"
API_KEY="${1:-$DEFAULT_API_KEY}"
BASE_URL="$DEFAULT_BASE_URL"

OPUS_MODEL="gemini-2.5-pro"
SONNET_MODEL="gemini-2.5-flash"
HAIKU_MODEL="gemini-2.0-flash-lite"

# ── Colors & helpers ─────────────────────────────────────────────────────────
GREEN='\033[0;32m'; YELLOW='\033[1;33m'; BLUE='\033[0;34m'; RED='\033[0;31m'; NC='\033[0m'
log()  { printf "${GREEN}[%s]${NC} %s\n" "$(date '+%H:%M:%S')" "$*"; }
warn() { printf "${YELLOW}[WARN]${NC} %s\n" "$*"; }
die()  { printf "${RED}[ERR]${NC} %s\n" "$*" >&2; exit 1; }

# ── Node / NVM ───────────────────────────────────────────────────────────────
load_nvm() {
    export NVM_DIR="${NVM_DIR:-$HOME/.nvm}"
    [[ -f "$NVM_DIR/nvm.sh" ]] && source "$NVM_DIR/nvm.sh" 2>/dev/null || true
}

ensure_node() {
    load_nvm
    command -v npm >/dev/null 2>&1 && return 0
    warn "npm not found — installing NVM + Node.js LTS..."
    curl -fsSL https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash
    export NVM_DIR="$HOME/.nvm"
    source "$NVM_DIR/nvm.sh"
    nvm install --lts || die "nvm install failed"
    command -v npm >/dev/null 2>&1 || die "npm still not found after NVM install"
}

install_claude() {
    if command -v claude >/dev/null 2>&1; then
        log "Claude Code: $(timeout 3 claude -v 2>/dev/null || echo already installed)"
        return 0
    fi
    log "Installing @anthropic-ai/claude-code..."
    ensure_node
    npm install -g @anthropic-ai/claude-code@latest || die "npm install failed"
    hash -r 2>/dev/null || true
    command -v claude >/dev/null 2>&1 || die "claude not found after install"
    log "Claude Code installed"
}

# ── Write settings.json ──────────────────────────────────────────────────────
write_settings() {
    mkdir -p "$HOME/.claude"
    [[ -f "$HOME/.claude/settings.json" ]] && \
        cp "$HOME/.claude/settings.json" "$HOME/.claude/settings.json.bak"
    cat > "$HOME/.claude/settings.json" << EOF
{
  "env": {
    "ANTHROPIC_API_KEY": "${API_KEY}",
    "ANTHROPIC_BASE_URL": "${BASE_URL}",
    "ANTHROPIC_DEFAULT_OPUS_MODEL": "${OPUS_MODEL}",
    "ANTHROPIC_DEFAULT_SONNET_MODEL": "${SONNET_MODEL}",
    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "${HAIKU_MODEL}",
    "API_TIMEOUT_MS": "3000000"
  },
  "permissions": { "allow": ["*"] },
  "skipDangerousModePermissionPrompt": true
}
EOF
}

# ── Write shell RC block (idempotent sentinel) ───────────────────────────────
write_shell_block() {
    local f="$1"
    [[ -f "$f" ]] || touch "$f"
    sed -i '/# >>> google >>>/,/# <<< google <<</d' "$f" 2>/dev/null || true
    cat >> "$f" << EOF

# >>> google >>>
export ANTHROPIC_API_KEY='${API_KEY}'
export ANTHROPIC_BASE_URL='${BASE_URL}'
export ANTHROPIC_DEFAULT_OPUS_MODEL='${OPUS_MODEL}'
export ANTHROPIC_DEFAULT_SONNET_MODEL='${SONNET_MODEL}'
export ANTHROPIC_DEFAULT_HAIKU_MODEL='${HAIKU_MODEL}'
export API_TIMEOUT_MS='3000000'
unset ANTHROPIC_AUTH_TOKEN 2>/dev/null || true
# <<< google <<<
EOF
}

# ── Cleanup previous providers ────────────────────────────────────────────────
cleanup_providers() {
    for f in "$HOME/.bashrc" "$HOME/.zshrc" "$HOME/.profile" "$HOME/.bash_profile" "$HOME/.zprofile"; do
        [ -f "$f" ] || continue
        sed -i '/# >>> openclaude >>>/,/# <<< openclaude <<</d' "$f" 2>/dev/null || true
        sed -i '/# >>> claudible >>>/,/# <<< claudible <<</d' "$f" 2>/dev/null || true
        sed -i '/# >>> fireworks >>>/,/# <<< fireworks <<</d' "$f" 2>/dev/null || true
        sed -i '/# >>> ollama >>>/,/# <<< ollama <<</d' "$f" 2>/dev/null || true
        sed -i '/# >>> anthropic >>>/,/# <<< anthropic <<</d' "$f" 2>/dev/null || true
        sed -i '/# >>> groq >>>/,/# <<< groq <<</d' "$f" 2>/dev/null || true
        sed -i '/# >>> cerebras >>>/,/# <<< cerebras <<</d' "$f" 2>/dev/null || true
        sed -i '/# >>> google >>>/,/# <<< google <<</d' "$f" 2>/dev/null || true
        sed -i '/# >>> nvidia >>>/,/# <<< nvidia <<</d' "$f" 2>/dev/null || true
        sed -i '/# >>> huggingface >>>/,/# <<< huggingface <<</d' "$f" 2>/dev/null || true
        sed -i '/# >>> fpt >>>/,/# <<< fpt <<</d' "$f" 2>/dev/null || true
        sed -i '/# >>> custom >>>/,/# <<< custom <<</d' "$f" 2>/dev/null || true
    done
}

# ── Main ─────────────────────────────────────────────────────────────────────
main() {
    echo ""
    echo -e "${BLUE}╔══════════════════════════════════════════════════╗${NC}"
    echo -e "${BLUE}║   Google Gemini × Claude Code  —  One-Shot       ║${NC}"
    echo -e "${BLUE}╚══════════════════════════════════════════════════╝${NC}"
    echo ""
    log "API Key : ${API_KEY:0:16}..."
    log "Base URL: ${BASE_URL}"
    echo ""

    cleanup_providers
    load_nvm
    install_claude

    log "Writing ~/.claude/settings.json..."
    write_settings

    log "Updating shell rc files..."
    write_shell_block "$HOME/.bashrc"
    [[ -f "$HOME/.zshrc" ]]   && write_shell_block "$HOME/.zshrc"
    [[ -f "$HOME/.profile" ]] && write_shell_block "$HOME/.profile"

    [[ -f "$HOME/.claude.json" ]] || echo '{}' > "$HOME/.claude.json"

    echo ""
    echo -e "${GREEN}✓ Setup complete! Launching claude...${NC}"
    echo ""
    source "$HOME/.bashrc" 2>/dev/null || true
    sleep 2
    exec claude -r
}

main "$@"