#!/bin/bash
# Installs Centhead on Linux (64-bit). Run it with:   curl -fsSL https://centhead.com/get/install-linux.sh | bash
# What it does, nothing else: downloads Centhead-linux-x64.tar.gz from centhead.com/get, checks its SHA-256 against centhead.com/get/latest.json, unpacks it
# into ~/.local/share/centhead, makes it runnable, adds a "centhead" command in ~/.local/bin and a menu entry. No root needed. Read it before you run it.
set -euo pipefail
BASE="https://centhead.com/get"
FILE="Centhead-linux-x64.tar.gz"
[ "$(uname -m)" = "x86_64" ] || { echo "This build is for 64-bit Intel/AMD processors (x86_64). See https://centhead.com/download"; exit 1; }
TMP="$(mktemp -d)"; trap 'rm -rf "$TMP"' EXIT
echo "Centhead for Linux: looking up the newest version..."
curl -fsSL "$BASE/latest.json" -o "$TMP/latest.json"
WANT="$(tr -d ' \n\r\t' < "$TMP/latest.json" | sed -n "s/.*\"$FILE\":{\"sha256\":\"\([0-9a-f]\{64\}\)\".*/\1/p")"
[ -n "$WANT" ] || { echo "No $FILE in the newest release yet. See https://centhead.com/download"; exit 1; }
echo "Downloading $FILE ..."
curl -fL --progress-bar "$BASE/$FILE" -o "$TMP/$FILE"
GOT="$(sha256sum "$TMP/$FILE" | cut -d' ' -f1)"
if [ "$GOT" != "$WANT" ]; then echo "The download does not match its published fingerprint. Nothing was installed."; exit 1; fi
APP="$HOME/.local/share/centhead"
rm -rf "$APP"; mkdir -p "$APP" "$HOME/.local/bin" "$HOME/.local/share/applications"
tar -xzf "$TMP/$FILE" -C "$APP"
chmod +x "$APP/Centhead" "$APP/chrome_crashpad_handler" 2>/dev/null || true
cat > "$HOME/.local/bin/centhead" <<'LAUNCH'
#!/bin/bash
# Chromium's sandbox needs unprivileged user namespaces; some systems (for example Ubuntu 24.04 by default) switch them off. Only then is it started without the sandbox.
APP="$HOME/.local/share/centhead"
FLAGS=""
if ! unshare --user true 2>/dev/null; then FLAGS="--no-sandbox"; fi
exec "$APP/Centhead" $FLAGS "$@"
LAUNCH
chmod +x "$HOME/.local/bin/centhead"
cat > "$HOME/.local/share/applications/centhead.desktop" <<DESK
[Desktop Entry]
Type=Application
Name=Centhead
Comment=Rewarded attention, every cent itemised
Exec=$HOME/.local/bin/centhead
Icon=$APP/resources/server/public/assets/img/icon-512.png
Categories=Utility;
Terminal=false
DESK
echo "Installed. Start it from your applications menu, or run: centhead   (make sure ~/.local/bin is in your PATH)"