#!/usr/bin/env sh
# VidBee CLI standalone installer.
#
#   curl -fsSL https://vidbee.dev/cli/install.sh | sh
#   curl -fsSL https://vidbee.dev/cli/install.sh | sh -s -- --version 0.1.0
#
# Downloads the npm tarball for `@vidbee/cli` and installs it under
# $VIDBEE_HOME (default ~/.vidbee/cli). Writes a `vidbee` shim into
# $VIDBEE_BIN_DIR (default ~/.local/bin) that runs the bundled CLI via
# Node ≥ 20.
#
# Designed to work on macOS and Linux with POSIX sh + curl + tar + node.
# Windows users should install via npm:  npm install -g @vidbee/cli
#
# Reference: NEX-148 §2.

set -eu

PKG_NAME="@vidbee/cli"
REGISTRY_URL="${VIDBEE_REGISTRY:-https://registry.npmjs.org}"
VIDBEE_HOME="${VIDBEE_HOME:-$HOME/.vidbee/cli}"
VIDBEE_BIN_DIR="${VIDBEE_BIN_DIR:-$HOME/.local/bin}"
VERSION=""
QUIET="${VIDBEE_QUIET:-0}"

log() {
  if [ "$QUIET" != "1" ]; then
    printf '%s\n' "$1" >&2
  fi
}

die() {
  printf 'vidbee install: %s\n' "$1" >&2
  exit 1
}

while [ $# -gt 0 ]; do
  case "$1" in
    --version)
      shift
      [ $# -gt 0 ] || die '--version requires a value'
      VERSION="$1"
      ;;
    --version=*)
      VERSION="${1#--version=}"
      ;;
    --bin-dir)
      shift
      [ $# -gt 0 ] || die '--bin-dir requires a value'
      VIDBEE_BIN_DIR="$1"
      ;;
    --bin-dir=*)
      VIDBEE_BIN_DIR="${1#--bin-dir=}"
      ;;
    --home)
      shift
      [ $# -gt 0 ] || die '--home requires a value'
      VIDBEE_HOME="$1"
      ;;
    --home=*)
      VIDBEE_HOME="${1#--home=}"
      ;;
    --quiet)
      QUIET=1
      ;;
    --help|-h)
      cat <<USAGE
Usage: cli-install.sh [--version X.Y.Z] [--home DIR] [--bin-dir DIR] [--quiet]

Installs the @vidbee/cli npm tarball into \$VIDBEE_HOME (default ~/.vidbee/cli)
and writes a 'vidbee' shim into \$VIDBEE_BIN_DIR (default ~/.local/bin).

Prefer one of:
  npm install -g @vidbee/cli
  pnpm add -g @vidbee/cli
  bun install -g @vidbee/cli
  brew install vidbee/tap/vidbee

Use this installer when you don't have a package manager handy.
USAGE
      exit 0
      ;;
    *)
      die "unknown argument: $1"
      ;;
  esac
  shift
done

# Sanity-check dependencies
need() {
  command -v "$1" >/dev/null 2>&1 || die "missing required command: $1"
}
need curl
need tar
need node

NODE_MAJOR="$(node -p 'process.versions.node.split(".")[0]' 2>/dev/null || echo 0)"
if [ "$NODE_MAJOR" -lt 20 ]; then
  die "node ≥ 20 required (found $(node -v 2>/dev/null || echo 'none'))"
fi

# Resolve version
if [ -z "$VERSION" ]; then
  log "Resolving latest version of $PKG_NAME from $REGISTRY_URL"
  META_URL="$REGISTRY_URL/$(printf '%s' "$PKG_NAME" | sed 's|/|%2F|')/latest"
  RESOLVED="$(curl -fsSL "$META_URL" | node -e '
    let buf = "";
    process.stdin.on("data", (c) => { buf += c; });
    process.stdin.on("end", () => {
      const data = JSON.parse(buf);
      if (typeof data.version !== "string") {
        process.stderr.write("registry response missing version\n");
        process.exit(1);
      }
      process.stdout.write(data.version);
    });
  ')"
  VERSION="$RESOLVED"
  [ -n "$VERSION" ] || die "could not resolve latest version"
fi

log "Installing $PKG_NAME@$VERSION → $VIDBEE_HOME"

TMP_DIR="$(mktemp -d 2>/dev/null || mktemp -d -t vidbee)"
trap 'rm -rf "$TMP_DIR"' EXIT INT TERM

ESCAPED_NAME="$(printf '%s' "$PKG_NAME" | sed 's|/|%2F|')"
META_URL="$REGISTRY_URL/$ESCAPED_NAME/$VERSION"
META_FILE="$TMP_DIR/meta.json"
curl -fsSL "$META_URL" -o "$META_FILE" || die "could not fetch package metadata"

TARBALL_URL="$(node -e '
  const fs = require("node:fs");
  const m = JSON.parse(fs.readFileSync(process.argv[1], "utf-8"));
  if (!m || !m.dist || !m.dist.tarball) {
    process.stderr.write("metadata missing dist.tarball\n");
    process.exit(1);
  }
  process.stdout.write(m.dist.tarball);
' "$META_FILE")"
[ -n "$TARBALL_URL" ] || die "metadata missing dist.tarball"

TARBALL="$TMP_DIR/cli.tgz"
curl -fsSL "$TARBALL_URL" -o "$TARBALL" || die "could not download tarball"

mkdir -p "$VIDBEE_HOME"
# Replace any prior install atomically by extracting into a new dir then
# swapping it in.
STAGING="$TMP_DIR/staging"
mkdir -p "$STAGING"
tar -xf "$TARBALL" -C "$STAGING"
[ -d "$STAGING/package" ] || die "unexpected tarball layout"

rm -rf "$VIDBEE_HOME.old"
if [ -d "$VIDBEE_HOME" ] && [ "$(ls -A "$VIDBEE_HOME" 2>/dev/null || true)" ]; then
  mv "$VIDBEE_HOME" "$VIDBEE_HOME.old"
fi
mkdir -p "$VIDBEE_HOME"
# Move package contents into VIDBEE_HOME
( cd "$STAGING/package" && tar -cf - . ) | ( cd "$VIDBEE_HOME" && tar -xf - )
rm -rf "$VIDBEE_HOME.old"

# Write the bin shim
mkdir -p "$VIDBEE_BIN_DIR"
SHIM="$VIDBEE_BIN_DIR/vidbee"
cat >"$SHIM" <<SH
#!/usr/bin/env sh
# Generated by VidBee CLI installer.
exec node "$VIDBEE_HOME/dist/bin/vidbee.mjs" "\$@"
SH
chmod +x "$SHIM"

if ! [ -f "$VIDBEE_HOME/dist/bin/vidbee.mjs" ]; then
  die "expected dist/bin/vidbee.mjs in tarball but it is missing"
fi

log ""
log "Installed VidBee CLI $VERSION."
log "  Bin:      $SHIM"
log "  Bundle:   $VIDBEE_HOME/dist/index.mjs"
log ""

case ":$PATH:" in
  *":$VIDBEE_BIN_DIR:"*) ;;
  *)
    log "Note: $VIDBEE_BIN_DIR is not on your PATH. Add this line to your"
    log "      shell profile (~/.zshrc, ~/.bashrc, ~/.profile):"
    log ""
    log "        export PATH=\"$VIDBEE_BIN_DIR:\$PATH\""
    log ""
    ;;
esac

log "Verify with: vidbee :version"