install.sh

#!/usr/bin/env bash
# Install (or remove) the OpenCode usage collector for Omarchy's Agents panel.
# Tells you what it will do, then asks. Nothing outside your home directory is
# touched, and nothing belonging to Omarchy is modified.
set -euo pipefail

BIN_DIR="${XDG_BIN_HOME:-$HOME/.local/bin}"
UNIT_DIR="${XDG_CONFIG_HOME:-$HOME/.config}/systemd/user"
STATE_DIR="${XDG_STATE_HOME:-$HOME/.local/state}/omarchy/agents/usage"
COLLECTOR="omarchy-agent-usage-opencode"
SRC="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

say()  { printf '%s\n' "$*"; }
die()  { printf 'error: %s\n' "$*" >&2; exit 1; }

confirm() {
    [[ "${ASSUME_YES:-0}" == "1" ]] && return 0
    local reply
    read -r -p "$1 [y/N] " reply
    [[ "$reply" == [yY] || "$reply" == [yY][eE][sS] ]]
}

uninstall() {
    say "This will remove:"
    say "  $BIN_DIR/$COLLECTOR"
    say "  $UNIT_DIR/opencode-usage.{service,timer}"
    say "  $STATE_DIR/opencode.json   (the usage record; the tab disappears)"
    say ""
    confirm "Remove them?" || { say "Nothing done."; exit 0; }

    systemctl --user disable --now opencode-usage.timer 2>/dev/null || true
    rm -f "$UNIT_DIR/opencode-usage.service" "$UNIT_DIR/opencode-usage.timer"
    rm -f "$BIN_DIR/$COLLECTOR" "$STATE_DIR/opencode.json"
    systemctl --user daemon-reload
    say "Removed."
    exit 0
}

[[ "${1:-}" == "--uninstall" ]] && uninstall
[[ "${1:-}" == "--help" || "${1:-}" == "-h" ]] && {
    say "usage: $0 [--uninstall] [--help]"
    say "       ASSUME_YES=1 $0    # no prompt"
    exit 0
}

command -v systemctl >/dev/null || die "systemctl not found; this expects a systemd user session."
command -v python3   >/dev/null || die "python3 not found."

python3 - <<'PY' || die "Python 3.11 or newer is required (this script uses X | Y type syntax)."
import sys; sys.exit(0 if sys.version_info >= (3, 11) else 1)
PY

# Warn, do not block: someone may well be installing this before first run.
OPENCODE_DB="${XDG_DATA_HOME:-$HOME/.local/share}/opencode/opencode.db"
[[ -f "$OPENCODE_DB" ]] || say "note: $OPENCODE_DB does not exist yet. Run OpenCode once, or the tab will stay hidden until you do."

AGENTS_PLUGIN="${OMARCHY_PATH:-/usr/share/omarchy}/shell/plugins/agents"
[[ -d "$AGENTS_PLUGIN" ]] || say "note: $AGENTS_PLUGIN not found. Without Omarchy's agents plugin there is no panel to add a tab to."

say "This will install:"
say "  $SRC/bin/$COLLECTOR"
say "    -> $BIN_DIR/$COLLECTOR"
say "  $SRC/systemd/opencode-usage.{service,timer}"
say "    -> $UNIT_DIR/"
say "then enable and start opencode-usage.timer (runs every 2 minutes)."
say ""
say "The collector reads OpenCode's database read-only and writes one JSON file"
say "to $STATE_DIR/. It makes no network call."
say ""
confirm "Proceed?" || { say "Nothing done."; exit 0; }

mkdir -p "$BIN_DIR" "$UNIT_DIR" "$STATE_DIR"
install -m 0755 "$SRC/bin/$COLLECTOR"               "$BIN_DIR/$COLLECTOR"
install -m 0644 "$SRC/systemd/opencode-usage.service" "$UNIT_DIR/opencode-usage.service"
install -m 0644 "$SRC/systemd/opencode-usage.timer"   "$UNIT_DIR/opencode-usage.timer"

systemctl --user daemon-reload
systemctl --user enable --now opencode-usage.timer

say ""
if systemctl --user start opencode-usage.service; then
    say "Installed, and the first collection ran."
else
    say "Installed, but the first run failed. See: journalctl --user -u opencode-usage.service"
fi

say ""
say "Open the Agents panel in the top bar; the OpenCode tab should be there."
say "If it is not, the collector found no usage yet — check with:"
say "  systemctl --user status opencode-usage.service"
say "  cat $STATE_DIR/opencode.json"
say ""
say "Note: linger is off by default, so the timer runs only while you are logged in."
say "That is usually what you want on a laptop."