Claude
28c3c1dc63
The previous east-flavored composite (tight-crop east region + lunar texture overlay) was honest but visually limited: 38-px source moon, no real terminator shadows on quarters, and a faint upscaled-halo background that was less compelling than just a clean lunar render. New flow: - East stays the witness (verifies the moon was visible during the collection window) and supplies the timestamp. - moon_dialamoon.py fetches the NASA SVS Dial-a-Moon render for that exact UTC hour. Free, public-domain, real-physics: correct phase, libration, and crater shadows for any timestamp. - moon_composite.render_phase_closeup() places that render at ~92% of frame height on a 1920x1080 black background -- the long-telephoto look the user asked for. - One API call per phase event (~36/year), cached forever in moon-ref/dialamoon/. Quarter moons now show real 3D crater shadows along the terminator, which the prior algorithmic phase-shadow couldn't simulate from a full-moon reference. Adds MOON_REQUIRE_EAST_VERIFY=true|false toggle so the user can choose "only post when east saw it" (default, current behavior) vs "post every cycle regardless of weather over east." Drops the install-time lunar reference download (no longer needed) and the now-unused per-phase phase-shadow path stays in moon_composite.py for reference / future reuse. https://claude.ai/code/session_015PBVDESC3KLMbq1LpA6qLn
445 lines
17 KiB
Python
Executable File
445 lines
17 KiB
Python
Executable File
#!/usr/bin/env python3
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"""moon_phase_monthly.py — build the monthly moon-phase close-up.
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Handles three phases, controlled by --phase:
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full ~100% lit, posted MOON_FULL_POST_DELAY_DAYS after exact full
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first-quarter ~50% lit waxing (right half lit in northern hemisphere)
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third-quarter ~50% lit waning (left half lit in northern hemisphere)
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Algorithm (per phase):
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1. Find the most recent occurrence of the target phase (or honour --target).
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2. Scan east frames across the collection window (D-Δb .. D+Δa) and pick
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the frame closest in time to exact phase UTC where east successfully
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detected the moon and standard quality / altitude / illumination
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thresholds are met. East is the WITNESS — it confirms you actually had
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a chance to see the moon that night.
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3. Round east's capture timestamp to the nearest hour and fetch the NASA
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SVS Dial-a-Moon render for that hour. This gives a real-physics moon
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image with correct phase, libration and crater shadows.
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4. Render full-screen on a black background (moon fills ~92% of frame
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height), drop a caption naming the phase / month / capture moment /
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attribution, and upload to Mattermost.
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Geometry note — first-quarter from east is HARD: at first quarter the moon is
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up from noon to midnight, but east only sees the eastern sky, so it captures
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the moon during DAYTIME only (with a bright sky background). The detector is
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brightness-based and may often fail to find a daytime moon. Set
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MOON_FIRST_QUARTER_ENABLED=false in sky-cam.conf if you'd rather not chase it.
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Full moon and third-quarter both rise after dark and stay in east's view —
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those should land cleanly most months.
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Usage:
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moon_phase_monthly.py # auto: run any phase whose post-day = today
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moon_phase_monthly.py --phase full # force a single phase
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moon_phase_monthly.py --phase third-quarter --target 2026-04-09T11:51:00Z --dry-run
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"""
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from __future__ import annotations
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import argparse
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import os
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import pathlib
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import re
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import subprocess
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import sys
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from datetime import datetime, timedelta, timezone
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_here = pathlib.Path(__file__).resolve().parent
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sys.path.insert(0, str(_here))
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def _read_conf(path):
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conf = {}
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try:
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with open(path) as f:
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for line in f:
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line = line.strip()
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if not line or line.startswith('#') or '=' not in line:
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continue
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k, v = line.split('=', 1)
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k = k.strip()
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v = v.strip()
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v = re.sub(r'\s+#.*$', '', v)
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v = v.strip('"').strip("'")
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m = re.match(r'^\$\{[^}]+:-([^}]*)\}$', v)
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if m:
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v = m.group(1).strip('"').strip("'")
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conf[k] = v
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except FileNotFoundError:
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pass
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return conf
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CONF = _read_conf(_here / 'sky-cam.conf')
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CONF.update(_read_conf(_here / '.env'))
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BASE_DIR = CONF.get('BASE_DIR') or str(_here / 'data')
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MOVIES_DIR = CONF.get('MOVIES_DIR') or f'{BASE_DIR}/movies'
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SUNRISE_CAM = CONF.get('SUNRISE_CAM', 'east')
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TIMEZONE = CONF.get('TIMEZONE', 'UTC')
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MIN_QUALITY = float(CONF.get('MOON_MIN_QUALITY', CONF.get('MOON_FULL_MIN_QUALITY', 0.55)))
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MIN_ALTITUDE = float(CONF.get('MOON_MIN_ALTITUDE_DEG', CONF.get('MOON_FULL_MIN_ALTITUDE_DEG', 15.0)))
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OUT_W = int(CONF.get('MOON_OUTPUT_W', CONF.get('MOON_FULL_OUTPUT_W', 1920)))
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OUT_H = int(CONF.get('MOON_OUTPUT_H', CONF.get('MOON_FULL_OUTPUT_H', 1080)))
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MOON_PCT = float(CONF.get('MOON_HEIGHT_PCT', 0.92))
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REQUIRE_EAST_VERIFY = CONF.get('MOON_REQUIRE_EAST_VERIFY', 'true').lower() != 'false'
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PHASE_SPEC = {
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'full': {
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'index': 2,
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'label': 'Full Moon',
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'emoji': '🌕',
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'illum_min': float(CONF.get('MOON_FULL_MIN_ILLUMINATION', 0.95)),
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'illum_max': 1.01,
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'waxing': None,
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'window_before': int(CONF.get('MOON_FULL_WINDOW_BEFORE_DAYS', 1)),
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'window_after': int(CONF.get('MOON_FULL_WINDOW_AFTER_DAYS', 2)),
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'post_delay': int(CONF.get('MOON_FULL_POST_DELAY_DAYS', 3)),
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'enabled_key': 'MOON_FULL_ENABLED',
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},
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'first-quarter': {
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'index': 1,
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'label': 'First Quarter (Waxing Half)',
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'emoji': '🌓',
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'illum_min': float(CONF.get('MOON_QUARTER_MIN_ILLUMINATION', 0.40)),
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'illum_max': float(CONF.get('MOON_QUARTER_MAX_ILLUMINATION', 0.65)),
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'waxing': True,
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'window_before': int(CONF.get('MOON_QUARTER_WINDOW_BEFORE_DAYS', 1)),
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'window_after': int(CONF.get('MOON_QUARTER_WINDOW_AFTER_DAYS', 1)),
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'post_delay': int(CONF.get('MOON_QUARTER_POST_DELAY_DAYS', 2)),
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'enabled_key': 'MOON_FIRST_QUARTER_ENABLED',
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},
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'third-quarter': {
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'index': 3,
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'label': 'Third Quarter (Waning Half)',
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'emoji': '🌗',
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'illum_min': float(CONF.get('MOON_QUARTER_MIN_ILLUMINATION', 0.40)),
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'illum_max': float(CONF.get('MOON_QUARTER_MAX_ILLUMINATION', 0.65)),
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'waxing': False,
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'window_before': int(CONF.get('MOON_QUARTER_WINDOW_BEFORE_DAYS', 1)),
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'window_after': int(CONF.get('MOON_QUARTER_WINDOW_AFTER_DAYS', 1)),
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'post_delay': int(CONF.get('MOON_QUARTER_POST_DELAY_DAYS', 2)),
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'enabled_key': 'MOON_THIRD_QUARTER_ENABLED',
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},
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}
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_FRAME_RE = re.compile(r'^(\d{2})-(\d{2})-(\d{2})\.jpg$')
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def _local_tz():
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try:
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import pytz
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return pytz.timezone(TIMEZONE)
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except Exception:
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return timezone.utc
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def _frame_local_dt(date_str: str, fname: str):
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m = _FRAME_RE.match(fname)
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if not m:
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return None
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h, mn, s = (int(x) for x in m.groups())
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y, mo, d = (int(x) for x in date_str.split('-'))
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naive = datetime(y, mo, d, h, mn, s)
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tz = _local_tz()
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if hasattr(tz, 'localize'):
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return tz.localize(naive)
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return naive.replace(tzinfo=tz)
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def _candidate_frames(cam: str, dates: list[str]) -> list[tuple[str, datetime]]:
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out = []
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for d in dates:
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fdir = pathlib.Path(BASE_DIR) / cam / d
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if not fdir.is_dir():
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continue
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for fname in sorted(os.listdir(fdir)):
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if not fname.endswith('.jpg'):
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continue
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local_dt = _frame_local_dt(d, fname)
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if local_dt is None:
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continue
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out.append((str(fdir / fname), local_dt.astimezone(timezone.utc)))
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return out
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def _format_local(dt_utc: datetime) -> str:
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return dt_utc.astimezone(_local_tz()).strftime('%Y-%m-%d %H:%M:%S %Z')
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def _notify(title: str, body: str):
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try:
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subprocess.run([str(_here / 'notify.sh'), title, body], check=False)
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except FileNotFoundError:
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pass
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def _post_to_mattermost(image_path: str, message: str) -> bool:
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import requests
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base = CONF.get('mattermost_url', '').rstrip('/')
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token = CONF.get('access_token', '')
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channel_id = CONF.get('channel_id', '')
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if not all([base, token, channel_id]):
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print('mattermost credentials missing — skipping upload', file=sys.stderr)
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return False
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headers = {'Authorization': f'Bearer {token}'}
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with open(image_path, 'rb') as f:
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r = requests.post(
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f'{base}/api/v4/files',
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headers=headers,
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files={'files': f},
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data={'channel_id': channel_id},
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)
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if r.status_code != 201:
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print(f'mattermost upload failed: {r.status_code} {r.text}', file=sys.stderr)
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return False
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file_id = r.json()['file_infos'][0]['id']
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r = requests.post(
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f'{base}/api/v4/posts',
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headers=headers,
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json={'channel_id': channel_id, 'message': message, 'file_ids': [file_id]},
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)
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if r.status_code != 201:
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print(f'mattermost post failed: {r.status_code} {r.text}', file=sys.stderr)
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return False
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return True
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def _output_subdir(phase: str) -> str:
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return {
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'full': 'full-moons',
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'first-quarter': 'first-quarter',
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'third-quarter': 'third-quarter',
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}[phase]
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def _output_filename(phase: str, target_utc: datetime) -> str:
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slug = {'full': 'full', 'first-quarter': 'first-quarter', 'third-quarter': 'third-quarter'}[phase]
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return f"{target_utc.strftime('%Y-%m')}-{slug}.jpg"
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def run_phase(phase: str, target_utc: datetime | None, cam: str,
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dry_run: bool, no_upload: bool, out_path: str | None) -> int:
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spec = PHASE_SPEC[phase]
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if CONF.get(spec['enabled_key'], 'true').lower() == 'false':
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print(f'{spec["enabled_key"]}=false — skipping {phase}')
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return 0
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import moon_phase
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from moon_detect import detect_moon
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if target_utc is None:
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now = datetime.now(timezone.utc)
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events = moon_phase.phase_events_in_range(
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now - timedelta(days=45), now, spec['index'])
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if not events:
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print(f'no recent {phase} found in past 45 days', file=sys.stderr)
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return 1
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target_utc = events[-1]
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print(f'target {phase}: {target_utc.isoformat()} ({_format_local(target_utc)})')
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tz = _local_tz()
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target_local = target_utc.astimezone(tz)
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# If east-verification is disabled the user wants a post regardless of
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# whether east could see the moon that night. Fetch dial-a-moon for the
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# exact phase moment, render full-screen, post. Skips all east scanning.
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if not REQUIRE_EAST_VERIFY:
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print('MOON_REQUIRE_EAST_VERIFY=false — skipping east scan, using exact phase UTC')
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return _render_and_post(phase, spec, target_utc, target_utc, target_local,
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cam, dry_run, no_upload, out_path,
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witness_text='not requiring east verification (set MOON_REQUIRE_EAST_VERIFY=true to require)')
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dates = []
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for i in range(-spec['window_before'], spec['window_after'] + 1):
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d = (target_local + timedelta(days=i)).date()
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dates.append(d.strftime('%Y-%m-%d'))
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print(f'scanning dates: {dates}')
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candidates = _candidate_frames(cam, dates)
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print(f'frame count in window: {len(candidates)}')
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if not candidates:
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msg = (
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f'No frames for {cam} in window {dates[0]}..{dates[-1]} '
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f'around {phase} {target_utc.strftime("%Y-%m-%d %H:%MZ")}.'
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)
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_notify(f'{spec["emoji"]} {spec["label"]} — no frames available', msg)
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print(msg)
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return 0
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qualifying = []
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for path, utc_dt in candidates:
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try:
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alt, _ = moon_phase.altaz(utc_dt)
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except Exception as e:
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print(f'ERROR: moon_phase.altaz failed: {e}', file=sys.stderr)
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return 2
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if alt < MIN_ALTITUDE:
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continue
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det = detect_moon(path)
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if det is None or det.quality < MIN_QUALITY:
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continue
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illum = moon_phase.illumination(utc_dt)
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if illum < spec['illum_min'] or illum > spec['illum_max']:
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continue
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if spec['waxing'] is not None:
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if moon_phase.waxing(utc_dt) != spec['waxing']:
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continue
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qualifying.append((path, utc_dt, det, alt, illum))
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print(f'qualifying frames: {len(qualifying)}')
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if not qualifying:
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msg = (
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f'No clear-shot {phase} frame in window {dates[0]}..{dates[-1]} '
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f'(need quality≥{MIN_QUALITY}, altitude≥{MIN_ALTITUDE}°, '
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f'illumination {spec["illum_min"]:.2f}-{spec["illum_max"]:.2f}). '
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)
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if phase == 'first-quarter':
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msg += ('First quarter from east is best-effort because the moon is '
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'only up during daylight hours — daytime detection often '
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'fails. Lower MOON_MIN_QUALITY or accept that some months '
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'will skip.')
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else:
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msg += 'Likely cloudy across the whole window.'
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_notify(f'{spec["emoji"]} {spec["label"]} — no clear shot {target_utc.strftime("%B %Y")}', msg)
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print(msg)
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return 0
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best = min(qualifying, key=lambda t: abs(t[1] - target_utc))
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path, when_utc, det, alt, illum = best
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local_dt = when_utc.astimezone(tz)
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delta_min = (when_utc - target_utc).total_seconds() / 60.0
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print(f'picked: {path}')
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print(f' when_utc={when_utc.isoformat()} local={local_dt} '
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f'altitude={alt:.1f}° illum={illum:.4f} quality={det.quality:.3f} '
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f'Δtarget={delta_min:+.1f} min')
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if dry_run:
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return 0
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return _render_and_post(
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phase, spec, target_utc, when_utc, local_dt,
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cam, dry_run, no_upload, out_path,
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witness_text=f'witnessed at {local_dt.strftime("%Y-%m-%d %H:%M:%S %Z")} '
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f'({delta_min:+.0f} min from exact {phase})',
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)
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def _render_and_post(phase, spec, target_utc, when_utc, local_dt, cam,
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dry_run, no_upload, out_path, witness_text):
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if out_path is None:
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out_dir = pathlib.Path(MOVIES_DIR) / cam / _output_subdir(phase)
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out_dir.mkdir(parents=True, exist_ok=True)
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out_path = str(out_dir / _output_filename(phase, target_utc))
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# Fetch the NASA SVS Dial-a-Moon render for the hour east captured the
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# moon (or the exact phase moment if east-verification is off). The
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# render carries the correct phase, libration and crater shadows for
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# that UTC moment — the strongest possible match for what east "saw,"
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# and free of the white-blob limitation.
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import moon_dialamoon
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try:
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nasa_path = moon_dialamoon.fetch_for_time(when_utc)
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except Exception as e:
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msg = (
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f'NASA SVS Dial-a-Moon fetch failed for '
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f'{when_utc.strftime("%Y-%m-%dT%HZ")}: {e}'
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)
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_notify(f'{spec["emoji"]} {spec["label"]} — dial-a-moon fetch failed', msg)
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print(msg, file=sys.stderr)
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return 4
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print(f'dial-a-moon: {nasa_path}')
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from moon_composite import render_phase_closeup
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caption = (
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f"{spec['label']} — {target_utc.strftime('%B %Y')} — "
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f"sky-cam {cam} {witness_text} — render: NASA SVS Dial-a-Moon"
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)
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render_phase_closeup(
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str(nasa_path), out_path,
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output_size=(OUT_W, OUT_H), moon_height_pct=MOON_PCT,
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caption=caption,
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)
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print(f'wrote {out_path}')
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if no_upload:
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_notify(
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f'{spec["emoji"]} {spec["label"]} {target_utc.strftime("%B %Y")} (built, not posted)',
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f'{out_path} — {witness_text}',
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)
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return 0
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posted = _post_to_mattermost(
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out_path,
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f"{spec['emoji']} {spec['label']} — {target_utc.strftime('%B %Y')}\n"
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f"sky-cam {cam} {witness_text}.\n"
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f"Surface render from NASA SVS Dial-a-Moon for that hour.",
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)
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if posted:
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_notify(
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f'{spec["emoji"]} {spec["label"]} {target_utc.strftime("%B %Y")} posted',
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f'{witness_text} — {out_path}',
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)
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else:
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_notify(
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f'FAILED: {spec["emoji"]} {spec["label"]} {target_utc.strftime("%B %Y")} upload',
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f'Image built at {out_path} but Mattermost upload failed.',
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)
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return 0
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def auto_run(cam: str, dry_run: bool, no_upload: bool) -> int:
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"""Daily check: run any phase whose post-day equals today (UTC)."""
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import moon_phase
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today_utc = datetime.now(timezone.utc).date()
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ran_any = False
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rc = 0
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for phase, spec in PHASE_SPEC.items():
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if CONF.get(spec['enabled_key'], 'true').lower() == 'false':
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print(f'-- {phase}: {spec["enabled_key"]}=false → skip')
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continue
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events = moon_phase.phase_events_in_range(
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datetime.combine(today_utc - timedelta(days=45), datetime.min.time(), tzinfo=timezone.utc),
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datetime.now(timezone.utc),
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spec['index'])
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if not events:
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continue
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|
last_event = events[-1]
|
|
days_since = (today_utc - last_event.date()).days
|
|
if days_since == spec['post_delay']:
|
|
print(f'== running {phase} (last event {last_event.date()}, +{spec["post_delay"]} days = today) ==')
|
|
sub = run_phase(phase, last_event, cam, dry_run, no_upload, None)
|
|
rc = rc or sub
|
|
ran_any = True
|
|
else:
|
|
print(f'-- {phase}: last {last_event.date()}, days_since={days_since}, post_delay={spec["post_delay"]} → skip')
|
|
if not ran_any:
|
|
print('no phase scheduled for today')
|
|
return rc
|
|
|
|
|
|
def main():
|
|
p = argparse.ArgumentParser()
|
|
p.add_argument('--phase', choices=list(PHASE_SPEC.keys()),
|
|
help='Run a single phase regardless of schedule')
|
|
p.add_argument('--target', help='Override phase event UTC, ISO 8601 (requires --phase)')
|
|
p.add_argument('--cam', default=SUNRISE_CAM)
|
|
p.add_argument('--dry-run', action='store_true')
|
|
p.add_argument('--no-upload', action='store_true')
|
|
p.add_argument('--out', help='Override output path (requires --phase)')
|
|
args = p.parse_args()
|
|
|
|
if args.phase:
|
|
target = None
|
|
if args.target:
|
|
target = datetime.fromisoformat(args.target.replace('Z', '+00:00'))
|
|
return run_phase(args.phase, target, args.cam, args.dry_run, args.no_upload, args.out)
|
|
return auto_run(args.cam, args.dry_run, args.no_upload)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
sys.exit(main())
|