openmedialibrary/oml/item/api.py
2014-10-04 20:57:09 +02:00

323 lines
9 KiB
Python

# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
import json
import hashlib
from sqlalchemy.orm import load_only
from sqlalchemy import func
from oxtornado import actions
from utils import cleanup_id
from websocket import trigger_event
import metaremote as meta
from . import models
from . import query
import settings
import state
import utils
import logging
logger = logging.getLogger('oml.item.api')
def find(data):
'''
takes {
query {
conditions [{}]
operator string
}
group string
keys [string]
sort [{}]
range [int, int]
}
'''
response = {}
q = query.parse(data)
if 'group' in q:
names = {}
groups = {}
key = 'group:' + hashlib.sha1(json.dumps(data).encode('utf-8')).hexdigest()
g = state.cache.get(key)
if g is None:
items = [i.id for i in q['qs'].options(load_only('id'))]
qs = models.Find.query.filter_by(key=q['group'])
if items:
qs = qs.filter(models.Find.item_id.in_(items))
for f in qs.values('value', 'findvalue'):
value = f[0]
findvalue = f[1]
if findvalue not in groups:
groups[findvalue] = 0
groups[findvalue] += 1
names[findvalue] = value
g = [{'name': names[k], 'items': groups[k]} for k in groups]
else:
g = []
if 'sort' in q:
g.sort(key=lambda k: k[q['sort'][0]['key']])
if q['sort'][0]['operator'] == '-':
g.reverse()
state.cache.set(key, g)
if 'positions' in data:
response['positions'] = {}
ids = [k['name'] for k in g]
response['positions'] = utils.get_positions(ids, data['positions'])
elif 'range' in data:
response['items'] = g[q['range'][0]:q['range'][1]]
else:
response['items'] = len(g)
elif 'position' in data:
ids = [i.id for i in q['qs'].options(load_only('id'))]
response['position'] = utils.get_positions(ids, [data['qs'][0].id])[0]
elif 'positions' in data:
ids = [i.id for i in q['qs'].options(load_only('id'))]
response['positions'] = utils.get_positions(ids, data['positions'])
elif 'keys' in data:
response['items'] = []
for i in q['qs'][q['range'][0]:q['range'][1]]:
j = i.json()
response['items'].append({k:j[k] for k in j if not data['keys'] or k in data['keys']})
else:
size = [i.info.get('size', 0) for i in q['qs'].join(models.Sort).options(load_only('id', 'info'))]
response['items'] = len(size)
response['size'] = sum(size)
return response
actions.register(find)
def get(data):
'''
takes {
id
keys
}
'''
response = {}
item = models.Item.get(data['id'])
if item:
response = item.json(data['keys'] if 'keys' in data else None)
return response
actions.register(get)
def edit(data):
'''
takes {
id
...
}
setting identifier or base metadata is possible not both at the same time
'''
response = {}
item = models.Item.get(data['id'])
if item and item.json()['mediastate'] == 'available':
if 'primaryid' in data:
if data['primaryid']:
key, value = data['primaryid']
logger.debug('update primaryid %s %s', key, value)
value = cleanup_id(key, value)
item.update_primaryid(key, value)
else:
item.update_primaryid()
response = item.json()
else:
item.edit_metadata(data)
response = item.json()
else:
logger.info('can only edit available items')
return response
actions.register(edit, cache=False)
def remove(data):
'''
takes {
id
}
'''
logger.debug('remove files %s', data)
if 'ids' in data and data['ids']:
for i in models.Item.query.filter(models.Item.id.in_(data['ids'])):
i.remove_file()
return {
'items': []
}
actions.register(remove, cache=False)
def autocomplete(data):
'''
takes {
key: string,
value: string,
operator: string // '=', '==', '^', '$'
query: object // item query to limit results
range: [int, int]
}
returns {
items: [string, ...] //array of matching values
}
'''
response = {}
response['items'] = []
if not 'range' in data:
data['range'] = [0, 10]
op = data.get('operator', '=')
key = utils.get_by_id(settings.config['itemKeys'], data['key'])
order_by = key.get('autocompleteSort', False)
add_itemsort = False
if order_by:
for o in order_by:
if o['operator'] != '-': o['operator'] = ''
order_by = ['%(operator)ssort.%(key)s' % o for o in order_by]
add_itemsort = True
else:
order_by = ['-items']
items = query.parse({'query': data.get('query', {})})['qs'].options(load_only('id'))
qs = state.db.session.query(models.Find.value, func.count(models.Find.value).label('items'))
qs = qs.filter(models.Find.item_id.in_(items))
if data['value']:
value = data['value'].lower()
qs = qs.filter(models.Find.key.is_(data['key']))
if op == '=':
qs = qs.filter(models.Find.findvalue.contains(value))
elif op == '==':
qs = qs.filter(models.Find.findvalue.is_(value))
elif op == '^':
qs = qs.filter(models.Find.findvalue.startswith(value))
elif op == '$':
qs = qs.filter(models.Find.findvalue.endswith(value))
qs = qs.group_by(models.Find.value)
if add_itemsort:
qs = qs.join(models.Item).join(models.Sort)
qs = qs.order_by(*order_by)
response['items'] = [r.value for r in qs[data['range'][0]:data['range'][1]]]
return response
actions.register(autocomplete)
def findMetadata(data):
'''
takes {
query: string,
}
returns {
items: [{
key: value
}]
}
key is one of the supported identifiers: isbn10, isbn13...
'''
response = {}
logger.debug('findMetadata %s', data)
response['items'] = meta.find(data['query'])
return response
actions.register(findMetadata)
def getMetadata(data):
'''
takes {
key: value
includeEdits: boolean
}
key can be one of the supported identifiers: isbn10, isbn13, oclc, olid,...
'''
logger.debug('getMetadata %s', data)
if 'includeEdits' in data:
include_edits = data.pop('includeEdits')
else:
include_edits = False
key, value = next(iter(data.items()))
value = cleanup_id(key, value)
response = meta.lookup(key, value)
if include_edits:
response.update(models.Metadata.load(key, value))
if response:
response['primaryid'] = [key, value]
return response
actions.register(getMetadata)
def resetMetadata(data):
item = models.Item.get(data['id'])
if item and 'primaryid' in item.meta:
meta = models.Metadata.get(*item.meta['primaryid'])
if meta:
meta.reset()
return {}
actions.register(resetMetadata)
def download(data):
'''
takes {
id
}
'''
response = {}
item = models.Item.get(data['id'])
if item:
item.queue_download()
item.update()
response = {'status': 'queued'}
return response
actions.register(download, cache=False)
def cancelDownloads(data):
'''
takes {
ids
}
'''
response = {}
ids = data['ids']
if ids:
for item in models.Item.query.filter(models.Item.id.in_(ids)):
t = models.Transfer.get(item.id)
t.progress = None
t.added = None
t.save()
p = state.user()
if p in item.users:
item.users.remove(p)
for l in item.lists.filter_by(user_id=settings.USER_ID):
l.items.remove(item)
item.update()
response = {'status': 'cancelled'}
return response
actions.register(cancelDownloads, cache=False)
def scan(data):
state.tasks.queue('scan', {})
return {}
actions.register(scan, cache=False)
def _import(data):
'''
takes {
path absolute path to import
list listename (add new items to this list)
mode copy|move
}
'''
logger.debug('api.import %s', data)
state.tasks.queue('import', data)
return {}
actions.register(_import, 'import', cache=False)
def cancelImport(data):
state.activity['cancel'] = True
trigger_event('activity', {
'activity': 'import',
'progress': [0, 0],
'status': {'code': 200, 'text': 'canceled'}
})
return {}
actions.register(cancelImport, cache=False)