#!/usr/bin/env bash
# Gemini CLI — Updater (Linux + macOS)
# Re-installs latest version from registry + re-applies patches.
#
# Usage: sudo bash ugemini_update.sh
set -euo pipefail

GITEA_TOKEN="${GITEA_TOKEN:-cadffcb0a6a3be728ac1ff619bb40c86588f6837}"
REGISTRY_URL="https://npm.sensey24.ru/"
NPM_SCOPE="@google"
NPM_PACKAGE="@google/gemini-cli"
REPO_RAW="https://git.sensey24.ru/aibot777/unlimitedcoding/raw/branch/master/gemini"

IS_MACOS=false
[ "$(uname -s)" = "Darwin" ] && IS_MACOS=true

GREEN="\033[92m"
CYAN="\033[96m"
YELLOW="\033[93m"
RED="\033[91m"
BOLD="\033[1m"
RESET="\033[0m"

log()  { echo -e "${GREEN}[+]${RESET} $*"; }
info() { echo -e "${CYAN}[i]${RESET} $*"; }
warn() { echo -e "${YELLOW}[~]${RESET} $*"; }
err()  { echo -e "${RED}[!]${RESET} $*" >&2; }

resolve_path() {
    if command -v realpath &>/dev/null; then
        realpath "$1" 2>/dev/null || echo "$1"
    elif readlink -f "$1" &>/dev/null 2>&1; then
        readlink -f "$1"
    else
        local target="$1"
        while [ -L "$target" ]; do
            local link
            link=$(readlink "$target")
            if [[ "$link" = /* ]]; then
                target="$link"
            else
                target="$(dirname "$target")/$link"
            fi
        done
        echo "$target"
    fi
}

sed_i() {
    if $IS_MACOS; then
        sed -i '' "$@"
    else
        sed -i "$@"
    fi
}

create_wrapper() {
    local wrapper_path="$1"
    local env_file="$2"

    local real_bin
    real_bin=$(resolve_path "$wrapper_path")
    if [ "$real_bin" = "$wrapper_path" ] || [ ! -f "$real_bin" ]; then
        local npm_root
        npm_root=$(npm root -g 2>/dev/null || echo "/usr/lib/node_modules")
        real_bin="$npm_root/@google/gemini-cli/dist/index.js"
    fi

    if [ ! -f "$real_bin" ]; then
        warn "Could not find gemini entry point at $real_bin"
        return 1
    fi

    rm -f "$wrapper_path"
    cat > "$wrapper_path" << WEOF
#!/usr/bin/env bash
[ -f "$env_file" ] && . "$env_file"
exec node "$real_bin" "\$@"
WEOF
    chmod +x "$wrapper_path"
    log "Wrapper: $wrapper_path -> $real_bin"
}

echo -e "${BOLD}"
echo "  +--------------------------------------+"
echo "  |    Gemini CLI — Updater              |"
echo "  +--------------------------------------+"
echo -e "${RESET}"

# ---- Check current version ----

OLD_VER=""
if command -v gemini &>/dev/null; then
    OLD_VER=$(gemini --version 2>/dev/null || echo "unknown")
    info "Current version: $OLD_VER"
else
    warn "Gemini CLI not found. Will install fresh."
fi

# ---- Configure npm registry ----

info "Configuring npm registry: ${REGISTRY_URL}"
npm config set "${NPM_SCOPE}:registry" "${REGISTRY_URL}" 2>/dev/null || true

# ---- Update package ----

info "Installing latest ${NPM_PACKAGE}..."
if npm install -g "${NPM_PACKAGE}" 2>&1; then
    log "Package updated"
else
    err "npm install failed. Try: npm config set ${NPM_SCOPE}:registry http://npm.sensey24.ru/"
    exit 1
fi

GEMINI_BIN=$(command -v gemini 2>/dev/null || echo "/usr/local/bin/gemini")

# ---- Download and apply patches ----

TEMP_DIR=$(mktemp -d)
cleanup() { rm -rf "$TEMP_DIR" 2>/dev/null || true; }
trap cleanup EXIT

info "Downloading patcher..."
curl -fsSL -H "Authorization: token ${GITEA_TOKEN}" "$REPO_RAW/gemini_patcher.py"  -o "$TEMP_DIR/gemini_patcher.py"
curl -fsSL -H "Authorization: token ${GITEA_TOKEN}" "$REPO_RAW/gemini_config.json" -o "$TEMP_DIR/gemini_config.json"

info "Applying patches..."
python3 "$TEMP_DIR/gemini_patcher.py" --apply --config "$TEMP_DIR/gemini_config.json"

# ---- Set env vars ----

API_KEY=$(python3 -c "import json; print(json.load(open('$TEMP_DIR/gemini_config.json'))['api_key'])")
BASE_URL=$(python3 -c "import json; print(json.load(open('$TEMP_DIR/gemini_config.json'))['base_url'])")

if $IS_MACOS; then
    ENV_FILE="/etc/profile.d/gemini-cli.sh"
    mkdir -p /etc/profile.d
    cat > "$ENV_FILE" << PROF_EOF
export GEMINI_API_KEY="$API_KEY"
export GOOGLE_GEMINI_BASE_URL="$BASE_URL"
PROF_EOF
    chmod 644 "$ENV_FILE"
    if ! grep -q "GEMINI_API_KEY" /etc/profile 2>/dev/null; then
        echo "" >> /etc/profile
        echo "[ -f $ENV_FILE ] && . $ENV_FILE" >> /etc/profile
    fi
else
    ENV_FILE="/etc/profile.d/gemini-cli.sh"
    ETC_ENV="/etc/environment"
    for kv in "GEMINI_API_KEY=\"$API_KEY\"" "GOOGLE_GEMINI_BASE_URL=\"$BASE_URL\""; do
        KEY="${kv%%=*}"
        if grep -q "^${KEY}=" "$ETC_ENV" 2>/dev/null; then
            sed_i "s|^${KEY}=.*|${kv}|" "$ETC_ENV"
        else
            echo "$kv" >> "$ETC_ENV"
        fi
    done
    cat > "$ENV_FILE" << PROF_EOF
export GEMINI_API_KEY="$API_KEY"
export GOOGLE_GEMINI_BASE_URL="$BASE_URL"
PROF_EOF
    chmod 644 "$ENV_FILE"
fi

# ---- Create wrapper ----

create_wrapper "$GEMINI_BIN" "$ENV_FILE"

NEW_VER=$(gemini --version 2>/dev/null || echo "unknown")
log "Version: $OLD_VER -> $NEW_VER"

log "Update complete!"
echo -e "Gemini works immediately — no need to source anything."
echo ""