#!/usr/bin/env bash
set -euo pipefail

ROOT_DIR="$(cd "$(dirname "$0")" && pwd)"
PROMPT_JSON="$ROOT_DIR/output/prompt.json"
MANIFEST_JSON="$ROOT_DIR/manifest.json"

if [ ! -f "$PROMPT_JSON" ]; then
  echo "[ERROR] prompt.json not found."
  exit 1
fi

if ! command -v jq >/dev/null 2>&1; then
  echo "[ERROR] jq not found. Install jq first."
  exit 1
fi

WORLD_ID=$(jq -r '.meta.world_id' "$PROMPT_JSON")
WORLD_VERSION=$(jq -r '.meta.world_version' "$PROMPT_JSON")
STYLE_ID=$(jq -r '.meta.style_id' "$PROMPT_JSON")
SCENE_ID=$(jq -r '.meta.scene_id' "$PROMPT_JSON")
TASK_TYPE=$(jq -r '.meta.task_type' "$PROMPT_JSON")

if [[ "$WORLD_ID" == "null" || "$STYLE_ID" == "null" || "$TASK_TYPE" == "null" ]]; then
  echo "[ERROR] Invalid meta fields in prompt.json"
  exit 1
fi

cat > "$MANIFEST_JSON" <<EOF
{
  "version": "1.0",
  "world": {
    "id": "$WORLD_ID",
    "version": "$WORLD_VERSION"
  },
  "style": {
    "id": "$STYLE_ID"
  },
  "scene": {
    "id": "$SCENE_ID"
  },
  "task": {
    "type": "$TASK_TYPE",
    "prompt_ref": "output/prompt.json"
  }
}
EOF

echo "[OK] manifest.json generated successfully."
echo "[DONE] $MANIFEST_JSON"