Codex
266 lines
16 KiB
Python
266 lines
16 KiB
Python
"""A private family register, independent from login accounts and camera roles."""
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import datetime as dt
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import json
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import secrets
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from urllib.parse import urlsplit
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class Family:
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def __init__(self, app):
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self.a = app
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def initialize(self):
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with self.a.LOCK:
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self.a.DB.executescript('''
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CREATE TABLE IF NOT EXISTS people (id TEXT PRIMARY KEY, body TEXT NOT NULL);
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CREATE TABLE IF NOT EXISTS family_links (id TEXT PRIMARY KEY, body TEXT NOT NULL);
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CREATE TABLE IF NOT EXISTS family_events (id TEXT PRIMARY KEY, body TEXT NOT NULL);
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CREATE TABLE IF NOT EXISTS family_changes (
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revision INTEGER PRIMARY KEY, kind TEXT NOT NULL, target_id TEXT NOT NULL,
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before_json TEXT, after_json TEXT NOT NULL, actor TEXT NOT NULL,
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at TEXT NOT NULL, restored_from INTEGER);
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CREATE INDEX IF NOT EXISTS family_changes_target ON family_changes(kind,target_id,revision);
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''')
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self.a.DB.commit()
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def authorize(self, user, edit=False):
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self.a.HOUSEHOLDS.scope(user)
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if not self.a.HOUSEHOLDS.manager(user) and user.get('familyAccess', 'none') not in (('edit',) if edit else ('read', 'edit')):
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raise self.a.Problem('没有家谱' + ('编辑' if edit else '查看') + '权限', 403)
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def snapshot(self, user):
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self.authorize(user)
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with self.a.LOCK:
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can_edit = self.a.HOUSEHOLDS.manager(user) or user.get('familyAccess') == 'edit'
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people = self.a.HOUSEHOLDS.objects(user, 'people')
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return {'revision': self.a.setting(self.a.HOUSEHOLDS.revision_key(user), 0), 'people': people,
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'links': self.a.HOUSEHOLDS.objects(user, 'family_links'),
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'events': [e for e in self.a.HOUSEHOLDS.objects(user, 'family_events')
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if can_edit or (e.get('status') == 'published' and not e.get('archived'))],
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'canEdit': can_edit,
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'selfId': user.get('personId', '') if any(p['id'] == user.get('personId') for p in people) else '',
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'familyId': self.a.HOUSEHOLDS.scope(user)}
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def save(self, kind, data, user, restored_from=None):
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self.authorize(user, True)
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a = self.a
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with a.LOCK:
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revision_key = a.HOUSEHOLDS.revision_key(user)
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revision = a.setting(revision_key, 0)
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if type(data.get('revision')) is not int or data['revision'] != revision:
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raise a.Problem('家谱已被更新，请重新载入后再编辑', 409)
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if kind not in ('person', 'link', 'event'):
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raise a.Problem('家谱记录类型不存在', 404)
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table = {'person': 'people', 'link': 'family_links', 'event': 'family_events'}[kind]
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family_id = a.HOUSEHOLDS.prepare(user, table, data,
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(('people', 'fromId'), ('people', 'toId')) if kind == 'link' else ())
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if kind == 'event' and isinstance(data.get('personIds', []), list):
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for person in data.get('personIds', []):
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a.HOUSEHOLDS.owns(user, a.get_object('people', person))
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old = a.get_object(table, data.get('id'))
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if data.get('id') and not old:
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raise a.Problem('家谱记录不存在', 404)
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item = {'person': self.person, 'link': self.link, 'event': self.event}[kind](data, old)
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item.update(familyId=family_id, updatedAt=dt.datetime.now(dt.timezone.utc).isoformat(), updatedBy=user['username'])
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if kind == 'event':
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item.update(createdAt=old.get('createdAt', item['updatedAt']) if old else item['updatedAt'],
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createdBy=old.get('createdBy', user['username']) if old else user['username'])
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# Withdrawal and restoration must retain the first publication time.
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if old and old.get('publishedAt'):
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item['publishedAt'] = old['publishedAt']
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elif item['status'] == 'published':
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item['publishedAt'] = item['updatedAt']
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# Revision and record are committed together, so concurrent forms cannot overwrite silently.
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with a.DB:
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change_revision = a.DB.execute('SELECT COALESCE(MAX(revision),0)+1 FROM family_changes').fetchone()[0]
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a.DB.execute('INSERT OR REPLACE INTO ' + table + ' VALUES (?,?)', (item['id'], json.dumps(item)))
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a.DB.execute('INSERT OR REPLACE INTO settings VALUES (?,?)', (revision_key, json.dumps(revision + 1)))
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a.DB.execute('INSERT INTO family_changes VALUES (?,?,?,?,?,?,?,?)',
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(change_revision, kind, item['id'], json.dumps(old) if old else None,
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json.dumps(item), user['username'], item['updatedAt'], restored_from))
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a.audit({'person': '更新家谱人物', 'link': '更新家谱关系', 'event': '更新家族记事'}[kind], user['username'])
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return {'item': item, 'revision': revision + 1}
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def history(self, user, kind, target_id, before=None):
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# Previous drafts and withdrawn text are visible only to family editors.
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self.authorize(user, True)
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a = self.a
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table = {'person': 'people', 'link': 'family_links', 'event': 'family_events'}.get(kind)
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with a.LOCK:
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if not table or not a.get_object(table, target_id):
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raise a.Problem('家谱记录不存在', 404)
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a.HOUSEHOLDS.owns(user, a.get_object(table, target_id))
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if before is not None:
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a.integer(before, 1, 2**53 - 1)
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rows = a.DB.execute('SELECT * FROM family_changes WHERE kind=? AND target_id=? AND revision<? '
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'ORDER BY revision DESC LIMIT 21', (kind, target_id, before or 2**53 - 1)).fetchall()
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items = []
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for row in rows[:20]:
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old, new = json.loads(row['before_json'] or '{}'), json.loads(row['after_json'])
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fields = [k for k in new if k not in ('id', 'updatedAt', 'updatedBy', 'createdAt', 'createdBy', 'publishedAt')
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and old.get(k) != new[k]]
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items.append(dict(revision=row['revision'], at=row['at'], actor=row['actor'], fields=fields,
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created=row['before_json'] is None, restoredFrom=row['restored_from']))
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return dict(items=items, nextBefore=items[-1]['revision'] if len(rows) > 20 else None,
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revision=a.setting(a.HOUSEHOLDS.revision_key(user), 0))
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def change(self, user, change_revision):
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self.authorize(user, True)
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self.a.integer(change_revision, 1, 2**53 - 1)
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with self.a.LOCK:
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row = self.a.DB.execute('SELECT * FROM family_changes WHERE revision=?', (change_revision,)).fetchone()
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if not row:
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raise self.a.Problem('修改记录不存在', 404)
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self.a.HOUSEHOLDS.owns(user, json.loads(row['after_json']))
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return dict(revision=row['revision'], kind=row['kind'], targetId=row['target_id'],
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before=json.loads(row['before_json']) if row['before_json'] else None,
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after=json.loads(row['after_json']), at=row['at'], actor=row['actor'])
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def restore(self, data, user):
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self.authorize(user, True)
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with self.a.LOCK:
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change = self.change(user, data.get('changeRevision'))
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side = data.get('side')
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if side not in ('before', 'after') or change[side] is None:
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raise self.a.Problem('请选择有效的历史版本；创建前没有可恢复的内容')
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# Reuse all current relationship/date/publication validation. Restore is a new edit,
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# not an overwrite of history or a rollback of other people's records.
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return self.save(change['kind'], dict(change[side], revision=data.get('revision')),
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user, restored_from=change['revision'])
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def event(self, data, old):
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a = self.a
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item = {'id': old['id'] if old else secrets.token_hex(8)}
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for key, maximum, required in [('title', 160, True), ('eventDate', 10, True),
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('sourceName', 160, False),
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('sourceUrl', 2000, False)]:
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item[key] = a.clean_text(data.get(key, ''), maximum, required)
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try:
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if dt.date.fromisoformat(item['eventDate']).isoformat() != item['eventDate']:
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raise ValueError()
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except ValueError:
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raise a.Problem('记事日期请填写有效日期，格式为 YYYY-MM-DD')
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for key, maximum, label in [('summary', 400, '摘要'), ('body', 12000, '正文')]:
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value = data.get(key, '')
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if not isinstance(value, str) or len(value) > maximum or any(ord(c) < 32 and c not in '\r\n\t' for c in value):
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raise a.Problem(f'记事{label}格式不正确，最多 {maximum} 字')
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item[key] = value.strip()
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item['personIds'] = data.get('personIds', [])
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if (not isinstance(item['personIds'], list) or len(item['personIds']) > 200
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or any(not isinstance(p, str) or not a.get_object('people', p) for p in item['personIds'])):
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raise a.Problem('请选择有效的关联人物，最多 200 位')
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item['personIds'] = list(dict.fromkeys(item['personIds']))
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item['status'] = data.get('status', old.get('status', 'draft') if old else 'draft')
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item['archived'] = data.get('archived', old.get('archived', False) if old else False)
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if item['status'] not in ('draft', 'published') or not isinstance(item['archived'], bool):
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raise a.Problem('记事状态不正确')
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if item['sourceUrl']:
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try:
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parsed = urlsplit(item['sourceUrl'])
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if parsed.scheme not in ('https', 'http') or not parsed.hostname or parsed.username or parsed.password:
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raise ValueError()
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parsed.port
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except ValueError:
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raise a.Problem('报道链接请填写完整的 http 或 https 地址，不可包含账号密码')
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if item['status'] == 'published' and not (item['body'] or item['summary'] or item['sourceUrl']):
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raise a.Problem('发布前请填写记事正文、摘要或报道链接')
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return item
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def person(self, data, old):
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a = self.a
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item = {'id': old['id'] if old else secrets.token_hex(8)}
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for key, maximum in [('name', 80), ('alias', 120), ('birthDate', 10), ('deathDate', 10),
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('birthplace', 160), ('biography', 2000), ('note', 500)]:
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value = data.get(key, '')
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if key in ('biography', 'note'):
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if not isinstance(value, str) or len(value) > maximum or any(ord(c) < 32 and c not in '\r\n\t' for c in value):
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raise a.Problem('生平或备注格式不正确')
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item[key] = value.strip()
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else:
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item[key] = a.clean_text(value, maximum, key == 'name')
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for key in ('birthDate', 'deathDate'):
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if item[key]:
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try:
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if dt.date.fromisoformat(item[key]).isoformat() != item[key]:
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raise ValueError()
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except ValueError:
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raise a.Problem('日期请使用公历 YYYY-MM-DD；不确定可留空，在备注记录')
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if item['birthDate'] and item['deathDate'] and item['birthDate'] > item['deathDate']:
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raise a.Problem('逝世日期不能早于出生日期')
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item['gender'] = data.get('gender', 'unknown')
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item['lifeStatus'] = data.get('lifeStatus', 'alive')
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if item['gender'] not in ('male', 'female', 'unknown') or item['lifeStatus'] not in ('alive', 'deceased', 'unknown'):
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raise a.Problem('人物属性不正确')
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if item['deathDate'] and item['lifeStatus'] != 'deceased':
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raise a.Problem('填写逝世日期时，请选择已故')
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item['archived'] = data.get('archived', False)
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if not isinstance(item['archived'], bool):
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raise a.Problem('归档状态不正确')
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if not old or item['birthDate'] != old.get('birthDate', ''):
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self.check_birth_order([e for e in a.objects('family_links')
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if item['id'] in (e['fromId'], e['toId'])], item)
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return item
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def check_birth_order(self, links, proposed_person=None):
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people = {p['id']: p for p in self.a.objects('people')}
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if proposed_person:
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people[proposed_person['id']] = proposed_person
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for edge in links:
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if not edge.get('active') or edge['kind'] != 'parent' or edge.get('lineage') != 'biological':
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continue
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parent, child = people.get(edge['fromId']), people.get(edge['toId'])
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if parent and child and parent.get('birthDate') and child.get('birthDate') and parent['birthDate'] >= child['birthDate']:
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raise self.a.Problem('亲生父母的出生日期必须早于子女，请核对日期或亲子属性')
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def link(self, data, old):
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a = self.a
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left, right = data.get('fromId'), data.get('toId')
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if not isinstance(left, str) or not isinstance(right, str) or not a.get_object('people', left) or not a.get_object('people', right):
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raise a.Problem('请先录入关系双方的人物')
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if left == right:
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raise a.Problem('不能把人物与自己建立亲属关系')
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kind = data.get('kind')
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if kind not in ('parent', 'spouse'):
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raise a.Problem('关系类型不正确')
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lineage = data.get('lineage', 'unspecified')
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if lineage not in ('biological', 'adoptive', 'step', 'unspecified'):
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raise a.Problem('亲子关系属性不正确')
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active = data.get('active', True)
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if not isinstance(active, bool):
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raise a.Problem('关系状态不正确')
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item = dict(id=old['id'] if old else secrets.token_hex(8), fromId=left, toId=right, kind=kind,
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lineage=lineage if kind == 'parent' else 'unspecified', active=active,
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note=a.clean_text(data.get('note', ''), 300))
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self.check_birth_order([item])
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links = [e for e in a.objects('family_links') if e.get('active') and e['id'] != item['id']]
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if active:
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for e in links:
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same = (e['fromId'], e['toId']) == (left, right)
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if kind == 'spouse':
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same = {e['fromId'], e['toId']} == {left, right}
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if e['kind'] == kind and same:
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raise a.Problem('这条关系已经存在', 409)
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graph = {}
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for e in links + [item]:
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if e['kind'] == 'parent':
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graph.setdefault(e['fromId'], []).append(e['toId'])
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# Iterative walk supports deep ancestry without Python recursion limits.
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def reaches(start, target):
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pending, seen = [start], set()
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while pending:
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p = pending.pop()
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if p in seen:
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continue
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seen.add(p)
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for child in graph.get(p, []):
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if child == target:
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return True
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pending.append(child)
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return False
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if kind == 'parent' and reaches(right, left):
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raise a.Problem('这条关系会形成祖先与后代循环，请检查方向')
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for e in links + [item]:
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if e['kind'] == 'spouse' and (reaches(e['fromId'], e['toId']) or reaches(e['toId'], e['fromId'])):
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raise a.Problem('配偶不能同时是直系祖先或后代，请检查已有关系')
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return item
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