#!/usr/bin/env bash
# Scribe — release this session's task claims as it ends (milestone 381 step 4).
#
# A claim records a session's attention, and a session that ends has none left
# to give. This is the mechanical half of the hand-off: it needs nothing from
# the model, only the session id the harness reports. The other half — writing
# down where the work stands — only the model can do, and it is stated as a
# practice in the skill and the static context, not here.
#
# A TIDY-UP, NOT THE GUARANTEE. SessionEnd does not fire on a crash, a killed
# terminal or a dropped connection, and those are exactly the cases the claim
# was designed around. The lease is what makes a dead session's claim read as
# dead; this only keeps the ordinary exit from leaving a claim to run out.
#
# NOT ON /clear. A clear ends one conversation and starts the next in the same
# terminal, and SessionStart(source=clear) pushes back the work this session
# had claimed. Releasing here would leave that push with nothing to say. The
# next write moves the claim wherever the work actually continues.
#
# EXIT 0 AND SILENT, ALWAYS. Nobody reads a SessionEnd hook's output, and the
# session is ending whether this succeeds or not.
set -uo pipefail

# shellcheck source=plugin/hooks/scribe_defs.sh
. "$(dirname "${BASH_SOURCE[0]}")/scribe_defs.sh"

command -v curl >/dev/null 2>&1 || exit 0
scribe_config || exit 0

event=$(cat 2>/dev/null || true)
[ -n "$event" ] || exit 0

event_flat=$(printf '%s' "$event" | scribe_json_flat)
reason=$(scribe_json_pick "$event_flat" '.reason')
[ "$reason" = "clear" ] && exit 0

session_id=$(scribe_json_pick "$event_flat" '.session_id')
[ -n "$session_id" ] || exit 0

sid_enc=$(printf '%s' "$session_id" | scribe_urlenc) || exit 0
curl -fsS --max-time 4 \
  -H "Authorization: Bearer ${token}" \
  "${url%/}/api/plugin/release-session?session_id=${sid_enc}" \
  >/dev/null 2>&1 || true
exit 0