#!/usr/bin/env bash
# ==============================================================================
# Automated Asset Downloader for ComfyUI Lab Recipe
# Recipe: Wan 2.1 1.3B: Fast Local Cinematic Video on Consumer GPUs (8GB-12GB)
# Origin: https://decomfy.com/wan-2-1-t2v-1-3b-cinematic
# ==============================================================================
set -euo pipefail

# 1. ComfyUI directory location (Defaults to current working directory)
COMFY_DIR="${1:-.}"

# 2. Civitai API key (Optional: Set export CIVITAI_TOKEN="your_key" if gated)
CIVITAI_TOKEN="${CIVITAI_TOKEN:-}"

echo "===================================================================="
echo "ComfyUI Lab: Downloading assets for: wan-2-1-t2v-1-3b-cinematic"
echo "Target ComfyUI root: ${COMFY_DIR}"
echo "===================================================================="

# Create required directories
echo "==> Ensuring model directories exist..."
mkdir -p "${COMFY_DIR}/user/default/workflows"
mkdir -p "${COMFY_DIR}/models/diffusion_models"
mkdir -p "${COMFY_DIR}/models/text_encoders"
mkdir -p "${COMFY_DIR}/models/vae"

# Download Workflow JSON
echo "==> Fetching Workflow Canvas JSON..."
curl -sSL "https://decomfy.com/api/workflows/wan-2-1-t2v-1-3b-cinematic.json" -o "${COMFY_DIR}/user/default/workflows/wan-2-1-t2v-1-3b-cinematic.json"
echo "[OK] Saved workflow to ${COMFY_DIR}/user/default/workflows/wan-2-1-t2v-1-3b-cinematic.json"

echo "==> Downloading required models and weights..."
  # wan2.1_t2v_1.3B_bf16.safetensors (2.84 GB) -> models/diffusion_models/
  if [ ! -f "${COMFY_DIR}/models/diffusion_models/wan2.1_t2v_1.3B_bf16.safetensors" ]; then
    echo "[+] Downloading wan2.1_t2v_1.3B_bf16.safetensors (2.84 GB)..."
    URL="https://huggingface.co/Comfy-Org/Wan_2.1_ComfyUI_repackaged/resolve/main/split_files/diffusion_models/wan2.1_t2v_1.3B_bf16.safetensors"
    curl -C - -L -f --retry 3 --progress-bar "$URL" -o "${COMFY_DIR}/models/diffusion_models/wan2.1_t2v_1.3B_bf16.safetensors"
  else
    echo "[OK] Found ${COMFY_DIR}/models/diffusion_models/wan2.1_t2v_1.3B_bf16.safetensors"
  fi

  # umt5_xxl_fp8_e4m3fn_scaled.safetensors (5.2 GB) -> models/text_encoders/
  if [ ! -f "${COMFY_DIR}/models/text_encoders/umt5_xxl_fp8_e4m3fn_scaled.safetensors" ]; then
    echo "[+] Downloading umt5_xxl_fp8_e4m3fn_scaled.safetensors (5.2 GB)..."
    URL="https://huggingface.co/Comfy-Org/Wan_2.1_ComfyUI_repackaged/resolve/main/split_files/text_encoders/umt5_xxl_fp8_e4m3fn_scaled.safetensors"
    curl -C - -L -f --retry 3 --progress-bar "$URL" -o "${COMFY_DIR}/models/text_encoders/umt5_xxl_fp8_e4m3fn_scaled.safetensors"
  else
    echo "[OK] Found ${COMFY_DIR}/models/text_encoders/umt5_xxl_fp8_e4m3fn_scaled.safetensors"
  fi

  # wan_2.1_vae.safetensors (254 MB) -> models/vae/
  if [ ! -f "${COMFY_DIR}/models/vae/wan_2.1_vae.safetensors" ]; then
    echo "[+] Downloading wan_2.1_vae.safetensors (254 MB)..."
    URL="https://huggingface.co/Comfy-Org/Wan_2.1_ComfyUI_repackaged/resolve/main/split_files/vae/wan_2.1_vae.safetensors"
    curl -C - -L -f --retry 3 --progress-bar "$URL" -o "${COMFY_DIR}/models/vae/wan_2.1_vae.safetensors"
  else
    echo "[OK] Found ${COMFY_DIR}/models/vae/wan_2.1_vae.safetensors"
  fi

echo ""
echo "===================================================================="
echo "[SUCCESS] All recipe models and workflow have been synced!"
echo "Open ComfyUI, press 'Load' and select 'wan-2-1-t2v-1-3b-cinematic.json' to run."
echo "===================================================================="