#!/usr/bin/env bash
# Generate one topical image per blog post with stable-diffusion.cpp
# using Juggernaut XL v9 (photoreal SDXL fine-tune).
#   euler_a + 1024² + no --mmap is the stable combo on Apple Metal here
#   (DPM++2M/Karras/--mmap segfault on this M4 — known large-matrix Metal issue).
# Outputs WebP into public/blog-images/<slug>.webp.
set -euo pipefail

SD=~/stable-diffusion.cpp/build/bin/sd-cli
MODEL=~/sd-models/juggernautXL_v9.safetensors
OUT=/Users/jamestwose/Coding/tt-website/public/blog-images
TMP=/tmp/sd_blog
# Juggernaut README: heavy negatives hurt more than they help — keep it minimal.
NEG="text, watermark, signature, low quality, deformed, extra limbs"
STEPS=${STEPS:-20}

mkdir -p "$OUT" "$TMP"

# slug|prompt  (prompts use Juggernaut's reliable tokens: Wildlife/Landscape
# Photography, Hyperdetailed Photography, Cinematic, natural light)
POSTS=(
"best-off-leash-areas-for-dogs-in-lagos-and-nearby|Wildlife Photography, a happy dog running off-leash on a wide open sandy path through a Portuguese pine forest, dappled golden sunlight, Hyperdetailed Photography, natural light"
"how-to-choose-the-right-walk-for-your-dog-based-on-their-personality-and-needs|Wildlife Photography, a dog owner walking a calm happy dog on a quiet countryside dirt path at sunrise, soft warm light, Hyperdetailed Photography"
"how-to-give-a-reactive-dog-a-fulfilling-life-without-avoiding-the-world|Wildlife Photography, a calm dog on a quiet empty woodland trail with plenty of space, soft natural morning light, peaceful, Hyperdetailed Photography"
"off-leash-dog-rules-in-portugal-what-you-need-to-know-in-2026|Landscape Photography, a dog on a lead beside a coastal cliff path in Portugal with a blue ocean and sky, summer, Hyperdetailed Photography, Cinematic"
"the-importance-of-variety-in-your-dogs-life-and-how-to-do-it-right|Wildlife Photography, a curious dog discovering a new forest trail, sniffing the ground, vibrant green foliage, Hyperdetailed Photography, natural light"
"top-10-hikes-to-do-with-your-dog-in-lagos-and-the-algarve|Landscape Photography, a hiker with a dog on a coastal cliff trail in the Algarve Portugal, dramatic golden ocean views at sunset, Hyperdetailed Photography, Cinematic"
"walking-your-dog-in-the-algarve-hidden-dangers-every-owner-should-know|Wildlife Photography, a dog walking through a sunlit pine forest in Portugal, dappled light, natural mood, Hyperdetailed Photography"
)

i=0
for entry in "${POSTS[@]}"; do
  slug="${entry%%|*}"
  prompt="${entry##*|}"
  i=$((i+1))
  png="$TMP/$slug.png"
  webp="$OUT/$slug.webp"
  echo "[$i/${#POSTS[@]}] $slug  (steps=$STEPS)"
  "$SD" -m "$MODEL" -p "$prompt" -n "$NEG" \
    -H 1024 -W 1024 --steps "$STEPS" --cfg-scale 5.0 --rng std_default \
    -s $((i*1000)) -o "$png" >/tmp/sd_blog_$slug.log 2>&1 || {
      echo "  ✗ generation failed (see /tmp/sd_blog_$slug.log)"; exit 1; }
  cwebp -quiet -resize 1280 0 -q 82 "$png" -o "$webp" 2>/dev/null
  echo "  -> $(ls -lh "$webp" | awk '{print $5}')  $webp"
done
echo "✅ done"