#!/bin/bash
# Installs Transcribe 1.9.1 on this Mac:
#   curl -fsSL https://transcribe.anthony-tong.com/install-mac.sh | bash
#   curl -fsSL https://transcribe.anthony-tong.com/install-mac.sh | bash -s -- --with-stems   (also set up the stem separator)
# Downloads the build for your chip, checks its SHA-256, puts Transcribe.app in /Applications
# (or ~/Applications if that isn't writable), gives it the local ad-hoc signature macOS needs
# to run an app that isn't signed by a registered developer, and opens it.
# After this, Transcribe updates itself.
# --with-stems asks Transcribe to download its optional stem separator (Python, PyTorch with Metal
# GPU support, the Demucs model: about 0.4 GB) when it first opens; Stems menu does the same later.
set -euo pipefail

STEMS=0
for arg in "$@"; do
  case "$arg" in
    --with-stems) STEMS=1 ;;
    *) echo "Unknown option: $arg (did you mean --with-stems?)" >&2; exit 1 ;;
  esac
done

BASE="https://dl.anthony-tong.com/transcribe"
case "$(uname -m)" in
  arm64)  FILE="Transcribe-1.9.1-mac-arm64.tar.gz"; SHA="8c16ce10b8349319c3ed257926b890cf7fa062352cea93d60c4ccd0b8aca41d9"; CHIP="Apple Silicon" ;;
  x86_64) FILE="Transcribe-1.9.1-mac-intel.tar.gz"; SHA="387129f4728a8dcfe77d575d48a953c650e8ad0cfe36505c760e0748548874c8"; CHIP="Intel" ;;
  *) echo "Unsupported Mac: $(uname -m)" >&2; exit 1 ;;
esac

if pgrep -xq Transcribe; then
  echo "Transcribe is running. Quit it (Cmd+Q) and run this again." >&2; exit 1
fi

DEST=/Applications
[ -w "$DEST" ] || { DEST="$HOME/Applications"; mkdir -p "$DEST"; }

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

echo "Downloading Transcribe 1.9.1 for ${CHIP}..."
curl -fL --progress-bar -o "$TMP/$FILE" "$BASE/$FILE"
echo "$SHA  $TMP/$FILE" | shasum -a 256 -c - >/dev/null || { echo "Download is corrupt (checksum mismatch). Try again." >&2; exit 1; }

tar -xzf "$TMP/$FILE" -C "$TMP"
xattr -cr "$TMP/Transcribe.app"
codesign --force --deep --sign - "$TMP/Transcribe.app" 2>/dev/null

rm -rf "$DEST/Transcribe.app"
mv "$TMP/Transcribe.app" "$DEST/Transcribe.app"
echo "Installed to ${DEST}/Transcribe.app"
if [ "$STEMS" = 1 ]; then
  REQ="$HOME/Library/Application Support/Transcribe/stem-separator"
  mkdir -p "$REQ" && printf '{"gpu":true}' > "$REQ/install-requested"
  echo "The stem separator will download when Transcribe opens."
fi
open "$DEST/Transcribe.app"