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QR codes, printing, success-action and other fixes.

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This commit is contained in:
fiatjaf 2021-03-07 16:13:20 -03:00
parent cda0819f64
commit 63ae553565
9 changed files with 147 additions and 33 deletions
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2
lnbits/core/crud.py
View file

@ -136,7 +136,7 @@ async def get_standalone_payment(checking_id_or_hash: str) -> Optional[Payment]:
"""
SELECT *
FROM apipayments
WHERE checking_id = ? OR payment_hash = ?
WHERE checking_id = ? OR hash = ?
LIMIT 1
""",
(checking_id_or_hash, checking_id_or_hash),

2
lnbits/extensions/offlineshop/config.json
View file

@ -1,5 +1,5 @@
{
"name": "Offline Shop",
"name": "OfflineShop",
"short_description": "Sell stuff with Lightning and lnurlpay on a shop without internet or any electronic device.",
"icon": "nature_people",
"contributors": [

6
lnbits/extensions/offlineshop/lnurl.py
View file

@ -22,7 +22,7 @@ async def lnurl_response(item_id):
price_msat = item.price * 1000 * rate
resp = LnurlPayResponse(
callback=url_for("shop.lnurl_callback", item_id=item.id, _external=True),
callback=url_for("offlineshop.lnurl_callback", item_id=item.id, _external=True),
min_sendable=price_msat,
max_sendable=price_msat,
metadata=await item.lnurlpay_metadata(),
@ -56,11 +56,11 @@ async def lnurl_callback(item_id):
payment_hash, payment_request = await create_invoice(
wallet_id=shop.wallet,
amount=int(amount_received / 1000),
memo=await item.name,
memo=item.name,
description_hash=hashlib.sha256((await item.lnurlpay_metadata()).encode("utf-8")).digest(),
extra={"tag": "offlineshop", "item": item.id},
)
resp = LnurlPayActionResponse(pr=payment_request, success_action=item.success_action(payment_hash, shop), routes=[])
resp = LnurlPayActionResponse(pr=payment_request, success_action=item.success_action(shop, payment_hash), routes=[])
return jsonify(resp.dict())

76
lnbits/extensions/offlineshop/models.py
View file

@ -1,11 +1,54 @@
import json
from collections import OrderedDict
from quart import url_for
from typing import NamedTuple, Optional
from typing import NamedTuple, Optional, List
from lnurl import encode as lnurl_encode # type: ignore
from lnurl.types import LnurlPayMetadata # type: ignore
from lnurl.models import LnurlPaySuccessAction, UrlAction # type: ignore
shop_counters = {}
class ShopCounter(object):
fulfilled_payments: OrderedDict
counter: int
@classmethod
def invoke(cls, shop: "Shop"):
shop_counter = shop_counters.get(shop.id)
if not shop_counter:
shop_counter = cls(wordlist=shop.wordlist.split("\n"))
shop_counters[shop.id] = shop_counter
return shop_counter
@classmethod
def reset(cls, shop: "Shop"):
shop_counter = cls.invoke(shop)
shop_counter.counter = -1
shop_counter.wordlist = shop.wordlist.split("\n")
def __init__(self, wordlist: List[str]):
self.wordlist = wordlist
self.fulfilled_payments = OrderedDict()
self.counter = -1
def get_word(self, payment_hash):
if payment_hash in self.fulfilled_payments:
return self.fulfilled_payments[payment_hash]
# get a new word
self.counter += 1
word = self.wordlist[self.counter % len(self.wordlist)]
self.fulfilled_payments[payment_hash] = word
# cleanup confirmation words cache
to_remove = len(self.fulfilled_payments) - 23
if to_remove > 0:
for i in range(to_remove):
self.fulfilled_payments.popitem(False)
return word
class Shop(NamedTuple):
id: int
@ -13,24 +56,8 @@ class Shop(NamedTuple):
wordlist: str
def get_word(self, payment_hash):
# initialize confirmation words cache
self.fulfilled_payments = self.words or OrderedDict()
if payment_hash in self.fulfilled_payments:
return self.fulfilled_payments[payment_hash]
# get a new word
self.counter = (self.counter or -1) + 1
wordlist = self.wordlist.split("\n")
word = [self.counter % len(wordlist)]
# cleanup confirmation words cache
to_remove = self.fulfilled_payments - 23
if to_remove > 0:
for i in range(to_remove):
self.fulfilled_payments.popitem(False)
return word
sc = ShopCounter.invoke(self)
return sc.get_word(payment_hash)
class Item(NamedTuple):
@ -45,18 +72,23 @@ class Item(NamedTuple):
@property
def lnurl(self) -> str:
return lnurl_encode(url_for("offlineshop.lnurl_response", item_id=self.id))
return lnurl_encode(url_for("offlineshop.lnurl_response", item_id=self.id, _external=True))
def values(self):
values = self._asdict()
values["lnurl"] = self.lnurl
return values
async def lnurlpay_metadata(self) -> LnurlPayMetadata:
metadata = [["text/plain", self.description]]
if self.image:
metadata.append(self.image.split(","))
metadata.append(self.image.split(":")[1].split(","))
return LnurlPayMetadata(json.dumps(metadata))
def success_action(self, shop: Shop, payment_hash: str) -> Optional[LnurlPaySuccessAction]:
if not self.wordlist:
if not shop.wordlist:
return None
return UrlAction(

5
lnbits/extensions/offlineshop/static/js/index.js
View file

@ -25,6 +25,11 @@ new Vue({
}
}
},
computed: {
printItems() {
return this.offlineshop.items.filter(({enabled}) => enabled)
}
},
methods: {
openNewDialog() {
this.itemDialog.show = true

35
lnbits/extensions/offlineshop/templates/offlineshop/index.html
View file

@ -18,6 +18,7 @@
<q-table
dense
flat
selection="multiple"
:data="offlineshop.items"
row-key="id"
no-data-label="No items for sale yet"
@ -101,6 +102,16 @@
>
</q-select>
</q-form>
<div v-if="printItems.length > 0" class="row q-gutter-sm q-my-md">
<q-btn
type="a"
outline
color="purple"
:href="'print?items=' + printItems.map(({id}) => id).join(',')"
>Print QR Codes</q-btn
>
</div>
</q-card-section>
</q-card>
</div>
@ -120,6 +131,30 @@
<q-dialog v-model="itemDialog.show">
<q-card class="q-pa-lg q-pt-xl lnbits__dialog-card">
<q-card-section>
<h5
class="q-ma-none"
v-if="itemDialog.data.id"
v-text="itemDialog.data.name"
></h5>
<h5 class="q-ma-none q-mb-xl" v-else>Adding a new item</h5>
<q-responsive v-if="itemDialog.data.id" :ratio="1">
<qrcode
:value="itemDialog.data.lnurl"
:options="{width: 800}"
class="rounded-borders"
></qrcode>
</q-responsive>
<div v-if="itemDialog.data.id" class="row q-gutter-sm justify-center">
<q-btn
outline
color="grey"
@click="copyText(itemDialog.data.lnurl, 'LNURL copied to clipboard!')"
class="q-mb-lg"
>Copy LNURL</q-btn
>
</div>
<q-form @submit="sendItem" class="q-gutter-md">
<q-input
filled

25
lnbits/extensions/offlineshop/templates/offlineshop/print.html Normal file
View file

@ -0,0 +1,25 @@
{% extends "print.html" %} {% block page %} {% raw %}
<div class="row justify-center">
<div v-for="item in items" class="q-my-sm q-mx-lg">
<div class="text-center q-ma-none q-mb-sm">{{ item.name }}</div>
<qrcode :value="item.lnurl" :options="{margin: 0, width: 250}"></qrcode>
<div class="text-center q-ma-none q-mt-sm">{{ item.price }}</div>
</div>
</div>
{% endraw %} {% endblock %} {% block scripts %}
<script>
Vue.component(VueQrcode.name, VueQrcode)
new Vue({
el: '#vue',
created: function () {
window.print()
},
data: function () {
return {
items: JSON.parse('{{items | tojson}}')
}
}
})
</script>
{% endblock %}

25
lnbits/extensions/offlineshop/views.py
View file

@ -17,18 +17,35 @@ async def index():
return await render_template("offlineshop/index.html", user=g.user)
@offlineshop_ext.route("/print")
async def print_qr_codes():
items = []
for item_id in request.args.get("items").split(","):
item = await get_item(item_id)
if item:
items.append({"lnurl": item.lnurl, "name": item.name, "price": f"{item.price} {item.unit}"})
return await render_template("offlineshop/print.html", items=items)
@offlineshop_ext.route("/confirmation")
async def confirmation_code():
style = "<style>* { font-size: 100px}</style>"
payment_hash = request.args.get("p")
payment: Payment = await get_standalone_payment(payment_hash)
if not payment:
return f"Couldn't find the payment {payment_hash}.", HTTPStatus.NOT_FOUND
return f"Couldn't find the payment {payment_hash}." + style, HTTPStatus.NOT_FOUND
if payment.pending:
return f"Payment {payment_hash} wasn't received yet. Please try again in a minute.", HTTPStatus.PAYMENT_REQUIRED
return (
f"Payment {payment_hash} wasn't received yet. Please try again in a minute." + style,
HTTPStatus.PAYMENT_REQUIRED,
)
if payment.time + 60 * 15 < time.time():
return "too much time has passed."
return "too much time has passed." + style
item = await get_item(payment.extra.get("item"))
shop = await get_shop(item.shop)
return shop.next_word(payment_hash)
return shop.get_word(payment_hash) + style

4
lnbits/extensions/offlineshop/views_api.py
View file

@ -22,7 +22,7 @@ async def api_shop_from_wallet():
try:
return (
jsonify({**shop._asdict(), **{"items": [item._asdict() for item in items],},}),
jsonify({**shop._asdict(), **{"items": [item.values() for item in items],},}),
HTTPStatus.OK,
)
except LnurlInvalidUrl:
@ -39,7 +39,7 @@ async def api_shop_from_wallet():
schema={
"name": {"type": "string", "empty": False, "required": True},
"description": {"type": "string", "empty": False, "required": True},
"image": {"type": "string", "required": False},
"image": {"type": "string", "required": False, "nullable": True},
"price": {"type": "number", "required": True},
"unit": {"type": "string", "allowed": ["sat", "USD"], "required": True},
}