#!/usr/bin/env bash
# Plexum-gemini-provider installer.
#
# Builds + installs the plugin under ~/.plexum/plugins/.
# Operator config (~/.plexum/plugins/plexum-gemini-provider/config.json)
# is optional — defaults work if `gemini` is on PATH and authenticated.
set -euo pipefail

REPO="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)"
PROFILE_DIR="${HOME}/.plexum"

while [[ $# -gt 0 ]]; do
    case "$1" in
        --profile) PROFILE_DIR="$2"; shift 2 ;;
        -h|--help) sed -n '2,/^set -euo/p' "$0" | sed -n '/^#/p' | sed 's/^# \{0,1\}//'; exit 0 ;;
        *) echo "unknown flag: $1" >&2; exit 2 ;;
    esac
done

log() { printf '\033[1;34m[gemini-install]\033[0m %s\n' "$*"; }
command -v go >/dev/null || { echo "go not found on PATH" >&2; exit 1; }
command -v gemini >/dev/null || log "WARN: gemini CLI not on PATH yet (operator must install before first turn)"

PLUGIN_DIR="${PROFILE_DIR}/plugins/plexum-gemini-provider"
mkdir -p "${PLUGIN_DIR}"

cd "${REPO}"
VERSION="$(git describe --tags --always 2>/dev/null || echo dev)"
LDFLAGS="-X main.Version=${VERSION}"
log "building plexum-gemini-provider-plugin (v=${VERSION})"
CGO_ENABLED=0 go build -ldflags="${LDFLAGS}" \
    -o "${PLUGIN_DIR}/plexum-gemini-provider-plugin" \
    ./cmd/plexum-gemini-provider-plugin

cat > "${PLUGIN_DIR}/manifest.json" <<'EOF'
{
  "name": "plexum-gemini-provider",
  "version": "0.1.0",
  "activation": "lazy",
  "executable": "plexum-gemini-provider-plugin",
  "contracts": {
    "provider": {
      "models": ["gemini", "gemini-pro", "gemini-flash", "gemini-flash-lite"]
    }
  }
}
EOF

cat <<EOF

[gemini-install] done.
  plugin binary: ${PLUGIN_DIR}/plexum-gemini-provider-plugin
  manifest:      ${PLUGIN_DIR}/manifest.json
  models:        gemini / gemini-pro / gemini-flash / gemini-flash-lite

Optional config: ${PLUGIN_DIR}/config.json
  {"binary": "gemini", "extra_args": []}

No api_key needed here — the gemini CLI handles auth via its own
~/.gemini/ state (OAuth or GEMINI_API_KEY).

Next steps:
  1. Allow plugin in ${PROFILE_DIR}/plexum.json:
       .plugins.allow += ["plexum-gemini-provider"]
  2. plexum agent-add --model gemini-flash <agent-id>
  3. systemctl --user restart plexum
EOF