#!/usr/bin/env bash
# YouTube SEO Skills installer for Claude Code.
#
# Usage:
#   Global install (default — all Claude Code sessions):
#     curl -fsSL https://raw.githubusercontent.com/deeployCO/youtube-seo-skills/main/install.sh | bash
#
#   Project-local install (only this project):
#     curl -fsSL https://raw.githubusercontent.com/deeployCO/youtube-seo-skills/main/install.sh | bash -s -- --local
#
#   Custom target:
#     curl -fsSL https://raw.githubusercontent.com/deeployCO/youtube-seo-skills/main/install.sh | bash -s -- --target /path/to/skills
#
# The installer downloads the latest tagged release tarball from GitHub,
# extracts the skill folders, and copies them into your Claude Code
# skills directory.

set -euo pipefail

REPO="deeployCO/youtube-seo-skills"
DEFAULT_GLOBAL="${HOME}/.claude/skills"
DEFAULT_LOCAL="./.claude/skills"
TARGET=""
MODE="global"
REF="latest"

while [[ $# -gt 0 ]]; do
  case "$1" in
    --local)   MODE="local";  shift ;;
    --global)  MODE="global"; shift ;;
    --target)  TARGET="$2";   shift 2 ;;
    --ref)     REF="$2";      shift 2 ;;  # e.g. main, v0.1.0
    -h|--help)
      grep '^#' "$0" | sed 's/^# \{0,1\}//'
      exit 0 ;;
    *)
      echo "Unknown arg: $1" >&2
      exit 1 ;;
  esac
done

if [[ -z "$TARGET" ]]; then
  if [[ "$MODE" == "local" ]]; then
    TARGET="$DEFAULT_LOCAL"
  else
    TARGET="$DEFAULT_GLOBAL"
  fi
fi

echo "▶ YouTube SEO Skills installer"
echo "  Repo:    $REPO"
echo "  Ref:     $REF"
echo "  Target:  $TARGET"
echo

for bin in curl tar mkdir cp; do
  if ! command -v "$bin" >/dev/null 2>&1; then
    echo "✗ Required command not found: $bin" >&2
    exit 1
  fi
done

mkdir -p "$TARGET"

if [[ "$REF" == "latest" ]]; then
  TARBALL_URL="https://github.com/${REPO}/archive/refs/heads/main.tar.gz"
else
  TARBALL_URL="https://github.com/${REPO}/archive/refs/tags/${REF}.tar.gz"
fi

TMPDIR="$(mktemp -d)"
trap 'rm -rf "$TMPDIR"' EXIT

echo "▶ Downloading $TARBALL_URL"
curl -fsSL "$TARBALL_URL" -o "$TMPDIR/pkg.tar.gz"

echo "▶ Extracting"
tar -xzf "$TMPDIR/pkg.tar.gz" -C "$TMPDIR"
SRC_DIR="$(find "$TMPDIR" -maxdepth 1 -type d -name 'youtube-seo-skills-*' | head -n1)"
if [[ -z "$SRC_DIR" ]]; then
  echo "✗ Could not locate extracted directory" >&2
  exit 1
fi

echo "▶ Installing skills"
SKILLS=(
  youtube-seo
  youtube-seo-audit
  youtube-seo-video
  youtube-seo-optimize
  youtube-seo-channel
  youtube-seo-keywords
  youtube-seo-thumbnail
  youtube-seo-competitor
)
for skill in "${SKILLS[@]}"; do
  if [[ -d "$SRC_DIR/$skill" ]]; then
    rm -rf "${TARGET:?}/$skill"
    cp -R "$SRC_DIR/$skill" "$TARGET/$skill"
    echo "  ✓ $skill"
  else
    echo "  ✗ $skill (missing in tarball)" >&2
  fi
done

# Helper scripts go inside the orchestrator skill so they travel with it
if [[ -d "$SRC_DIR/scripts" ]]; then
  mkdir -p "$TARGET/youtube-seo/scripts"
  cp -R "$SRC_DIR/scripts/." "$TARGET/youtube-seo/scripts/"
  echo "  ✓ scripts/ (fetch_video.py, fetch_channel.py, analyze_thumbnail.py, audio_loudness.py)"
fi

cat <<EOF

✔ Installed to: $TARGET

Next steps:
  1. (Optional) Install Python dependencies for the helper scripts:
       pip install -r "$TARGET/youtube-seo/scripts/requirements.txt"
       # macOS: brew install ffmpeg yt-dlp

  2. (Optional) Set your YouTube Data API key for full tag/stats access:
       export YOUTUBE_API_KEY="your-key-here"

  3. Launch Claude Code and try one of:
       /youtube-seo-audit https://youtube.com/@yourhandle
       /youtube-seo-video https://youtube.com/watch?v=VIDEO_ID
       /youtube-seo-keywords "your niche"
       /youtube-seo-optimize https://youtube.com/watch?v=VIDEO_ID

Docs: https://github.com/${REPO}
EOF