#!/bin/sh
# Revela para escritorio · Revela for desktop — https://revelaslides.com/download
#
#   curl -fsSL https://revelaslides.com/install.sh | sh
#
# macOS: la última versión en Aplicaciones (en ~/Applications si no se puede escribir en /Applications).
# Debian y Ubuntu: el repositorio apt de Revela, firmado (se actualiza con el sistema: sudo apt upgrade).
# Otros Linux: la AppImage en ~/.local/bin, con su entrada en el menú (se actualiza sola).
# Todo sale de las versiones publicadas en https://github.com/fmesasc/revela/releases — nada más.
set -eu

REPO="fmesasc/revela"
LATEST="https://github.com/$REPO/releases/latest/download"
API="https://api.github.com/repos/$REPO/releases/latest"

say() { printf '%s\n' "$*"; }
fail() { say "✗ No se pudo instalar Revela · Revela couldn't be installed: $*" >&2; exit 1; }
command -v curl >/dev/null 2>&1 || fail "falta curl · curl is missing"

# The address of the latest version's file whose name ends like that.
asset() { curl -fsSL -H 'User-Agent: revela-install' "$API" | grep -o "\"browser_download_url\": *\"[^\"]*$1\"" | head -n 1 | sed 's/.*"\(https[^"]*\)"$/\1/'; }

case "$(uname -s)" in
Darwin)
  url=$(asset '\.dmg'); [ -n "$url" ] || fail "no está el instalador para macOS · no macOS installer found"
  tmp=$(mktemp -d)
  trap 'hdiutil detach "$tmp/disk" -quiet >/dev/null 2>&1 || true; rm -rf "$tmp"' EXIT
  say "↓ Revela para macOS · Revela for macOS…"
  curl -fL --progress-bar -o "$tmp/Revela.dmg" "$url"
  mkdir "$tmp/disk"
  hdiutil attach "$tmp/Revela.dmg" -nobrowse -quiet -mountpoint "$tmp/disk"
  dest="/Applications"; [ -w "$dest" ] || dest="$HOME/Applications"
  mkdir -p "$dest"; rm -rf "$dest/Revela.app"; cp -R "$tmp/disk/Revela.app" "$dest/"
  # (The app isn't signed with an Apple certificate: without this, macOS says it can't be opened.)
  xattr -dr com.apple.quarantine "$dest/Revela.app" 2>/dev/null || true
  say "✓ Revela está en $dest y se actualiza sola · Revela is in $dest and updates itself."
  open "$dest/Revela.app" ;;
Linux)
  case "$(uname -m)" in
    x86_64|amd64) arch="amd64" ;;
    aarch64|arm64) arch="aarch64" ;;
    *) fail "solo hay versión para 64 bits (x86_64 o ARM64) · only x86_64 and ARM64 builds" ;;
  esac
  if command -v apt-get >/dev/null 2>&1 && command -v sudo >/dev/null 2>&1; then
    say "↓ Revela con apt (pide tu contraseña) · Revela through apt (asks for your password)…"
    sudo curl -fsSLo /usr/share/keyrings/revela.asc "$LATEST/revela.asc"
    echo "deb [signed-by=/usr/share/keyrings/revela.asc] $LATEST ./" | sudo tee /etc/apt/sources.list.d/revela.list >/dev/null
    sudo apt-get update -qq
    sudo apt-get install -y revela
    say "✓ Revela instalada; se actualiza con el sistema · Revela installed; it updates with the system (sudo apt upgrade)."
  else
    url=$(asset "_${arch}\\.AppImage"); [ -n "$url" ] || fail "no está la AppImage para este procesador · no AppImage for this processor"
    bin="$HOME/.local/bin"; apps="$HOME/.local/share/applications"
    mkdir -p "$bin" "$apps"
    say "↓ Revela (AppImage)…"
    curl -fL --progress-bar -o "$bin/Revela.AppImage" "$url"
    chmod +x "$bin/Revela.AppImage"
    cat > "$apps/revela.desktop" <<EOF
[Desktop Entry]
Name=Revela
Comment=Presentaciones · Presentations
Exec="$bin/Revela.AppImage" %U
Terminal=false
Type=Application
Categories=Office;
MimeType=application/vnd.revela+zip;x-scheme-handler/revela;
EOF
    command -v update-desktop-database >/dev/null 2>&1 && update-desktop-database "$apps" >/dev/null 2>&1 || true
    say "✓ Revela está en $bin/Revela.AppImage y se actualiza sola · and updates itself."
  fi ;;
*)
  fail "en Windows, usa PowerShell: irm https://revelaslides.com/install.ps1 | iex · on Windows, use PowerShell" ;;
esac