#!/usr/bin/env bash
#
# launch-commit-agent.sh
#
# Launch the non-interactive Codex Commit agent for a given task worktree,
# using the prompt in prompts/commit.md and the task's Markdown file.
#
# Usage: launch-commit-agent.sh <task-slug|NN> [<task-slug|NN>...]
set -euo pipefail

# Allocate a temporary file to capture the agent's commit message
last_message_file="$(mktemp)"
trap 'rm -f "$last_message_file"' EXIT

# Usage: one or more task IDs or slugs
if [ "$#" -lt 1 ]; then
  echo "Usage: $0 <task-slug|NN> [<task-slug|NN>...]" >&2
  exit 1
fi

# Locate repository and tasks directory; commit prompt is constant
repo_root=$(git rev-parse --show-toplevel)
tasks_dir="$repo_root/agentydragon/tasks"
prompt_file="$repo_root/agentydragon/prompts/commit.md"

for input in "$@"; do
  # Resolve numeric ID to full slug if needed
  if [[ "$input" =~ ^[0-9]{2}$ ]]; then
    matches=("$tasks_dir/${input}-"*.md)
    if [ "${#matches[@]}" -eq 1 ]; then
      task_slug="$(basename "${matches[0]}" .md)"
      echo "Resolved task ID '$input' to slug '$task_slug'"
    else
      echo "Error: expected exactly one task file matching '${input}-*.md', found ${#matches[@]}" >&2
      exit 1
    fi
  else
    task_slug="$input"
  fi

  # Paths for worktree and task file
  worktrees_dir="$tasks_dir/.worktrees"
  worktree_path="$worktrees_dir/$task_slug"
  task_file="$tasks_dir/$task_slug.md"

  # Preconditions
  if [ ! -d "$worktree_path" ]; then
    echo "Error: worktree for '$task_slug' not found; run create-task-worktree.sh first" >&2
    exit 1
  fi
  if [ ! -f "$prompt_file" ]; then
    echo "Error: commit prompt not found at $prompt_file" >&2
    exit 1
  fi
  if [ ! -f "$task_file" ]; then
    echo "Error: task file not found at $task_file" >&2
    exit 1
  fi

  # Perform commit in the task worktree
  echo "--- Processing task $task_slug ---"
  cd "$worktree_path"
  cmd=(codex --full-auto exec --output-last-message "$last_message_file")
  echo "Running: ${cmd[*]}"
  # Write the agent's final message to file, then commit using that file
  "${cmd[@]}" "$(<"$prompt_file")"$'\n\n'"$(<"$task_file")"
  git add -u
  git commit -F "$last_message_file"
done