#!/usr/bin/env python3
"""Generate HTML gallery for indkorsel person-detection snapshots.
Called via shell_command after each new snapshot is saved.
Output: /config/www/snapshots/indkorsel_gallery.html
"""
import os
import glob
from datetime import datetime
SNAPSHOT_DIR = "/config/www/snapshots/indkorsel"
OUTPUT_FILE = "/config/www/snapshots/indkorsel_gallery.html"
LOADER_FILE = "/config/www/snapshots/indkorsel_loader.html"
MAX_SNAPSHOTS = 500
def parse_timestamp(filename):
base = os.path.basename(filename).replace(".jpg", "")
try:
dt = datetime.strptime(base, "%Y-%m-%d_%H-%M-%S")
return dt.strftime("%-d. %b %Y %H:%M:%S")
except Exception:
return base
os.makedirs(SNAPSHOT_DIR, exist_ok=True)
files = sorted(
[f for f in glob.glob(os.path.join(SNAPSHOT_DIR, "*.jpg"))
if os.path.basename(f) != "latest.jpg"],
reverse=True
)[:MAX_SNAPSHOTS]
items_html = ""
images_js = [] # [{src, ts}, ...] for JS navigation
for f in files:
rel = "/local/snapshots/indkorsel/" + os.path.basename(f)
ts = parse_timestamp(f)
idx = len(images_js)
items_html += f"""
{ts}
"""
images_js.append({"src": rel, "ts": ts})
import json as _json
images_js_str = _json.dumps(images_js)
version = datetime.now().strftime("%Y%m%d%H%M%S")
html = f"""
Indkorsel snapshots
Viser {len(files)} person-snapshots – Indkorsel
{"" + items_html + "
" if files else "Ingen snapshots endnu.
"}
Nye billeder – tryk for at opdatere
✕
‹
![]()
›
"""
with open(OUTPUT_FILE, "w", encoding="utf-8") as fh:
fh.write(html)
# Write a tiny loader page that always redirects to gallery with current timestamp
# so the iframe in HA never serves a cached version
cache_bust = version
loader = f"""
"""
with open(LOADER_FILE, "w", encoding="utf-8") as fh:
fh.write(loader)
print(f"Gallery updated: {len(files)} snapshots -> {OUTPUT_FILE}")
# Update dashboard YAML iframe URL version so browser always fetches fresh loader
DASHBOARD_VIEW = "/config/dashboards/views/06c_indkorsel_snapshots.yaml"
try:
import re as _re
with open(DASHBOARD_VIEW, "r", encoding="utf-8") as fh:
dash = fh.read()
updated = _re.sub(
r'(url: /local/snapshots/indkorsel_loader\.html)(\?v=\d+)?',
rf'\1?v={version}',
dash
)
if updated != dash:
with open(DASHBOARD_VIEW, "w", encoding="utf-8") as fh:
fh.write(updated)
except Exception as _e:
print(f"Warning: could not update dashboard YAML: {_e}")