#!/usr/bin/env bash
# Close one task of an inline plan execution in a single call: run the task's
# test command, keep its full output in the workspace, print the tail, and —
# only if the command succeeded — append the completion line to the ledger.
# A failing command records nothing: the task is not complete.
#
# Usage: task-done PLAN_FILE TASK_NUMBER BASE -- TEST_COMMAND [ARGS...]
#   BASE is the SHA task-start printed; the completion line records BASE..HEAD.
# Exit: the test command's exit status.
set -euo pipefail

if [ $# -lt 5 ] || [ "$4" != "--" ]; then
  echo "usage: task-done PLAN_FILE TASK_NUMBER BASE -- TEST_COMMAND [ARGS...]" >&2
  exit 2
fi

plan=$1
n=$2
base=$3
shift 4
sdd="$(cd "$(dirname "$0")/../../subagent-driven-development/scripts" && pwd)"

git rev-parse --verify --quiet "$base" >/dev/null || { echo "bad BASE: $base" >&2; exit 2; }

dir=$("$sdd/sdd-workspace" "$plan")
log="$dir/task-${n}-tests.log"
ledger="$dir/progress.md"

# Render the command the way a person would type it, for the ledger line.
cmd=""
for a in "$@"; do
  case "$a" in
    *[[:space:]\"\;\|\&]*) cmd="$cmd '$a'" ;;
    *) cmd="$cmd $a" ;;
  esac
done
cmd=${cmd# }

rc=0
"$@" > "$log" 2>&1 || rc=$?

tail -n 5 "$log"
if [ "$rc" -ne 0 ]; then
  echo "task-done: test command exited $rc; Task $n NOT recorded (full output: $log)" >&2
  exit "$rc"
fi

last=$(grep -v '^[[:space:]]*$' "$log" | tail -n 1)
[ -f "$ledger" ] || printf '# SDD ledger — plan: %s\n' "$plan" > "$ledger"
line="Task $n: complete (commits $(git rev-parse --short=7 "$base")..$(git rev-parse --short=7 HEAD), tests: $cmd → $last)"
printf '%s\n' "$line" >> "$ledger"
echo "ledger: $line"