From 22279880dc451edb9edb94db33269620bddc80d4 Mon Sep 17 00:00:00 2001
From: Thomas Schneider <thomas@fsmpi.rwth-aachen.de>
Date: Tue, 10 Sep 2024 17:25:28 +0200
Subject: [PATCH] Add printing functionality

---
 examples/config.py                    |   5 +
 pdm.lock                              | 402 +++++++++++++++++++++-----
 pyproject.toml                        |   3 +-
 schilder2000/models.py                |   9 +
 schilder2000/templates/schild.html.j2 |  10 +
 schilder2000/views.py                 |  49 +++-
 6 files changed, 410 insertions(+), 68 deletions(-)

diff --git a/examples/config.py b/examples/config.py
index ca8a381..f3cc2d0 100644
--- a/examples/config.py
+++ b/examples/config.py
@@ -6,3 +6,8 @@ TEMPLATES_AUTO_RELOAD = True
 
 SCHILD_FOOTER = "Organization Without a Cool Acronym – O.W.C.A."
 SCHILD_LOGO = "img/owca.png"
+
+PRINTERS = {
+    "Office": "ipps://printserver.example.com:443/printers/Office",
+    "Kitchen": "ipp://kitchenprinter.local:631/ipp/print",
+}
diff --git a/pdm.lock b/pdm.lock
index 0a80dc9..db2f26c 100644
--- a/pdm.lock
+++ b/pdm.lock
@@ -5,11 +5,85 @@
 groups = ["default", "dev"]
 strategy = ["inherit_metadata"]
 lock_version = "4.5.0"
-content_hash = "sha256:618addcae7a6ab39fb74f18ca29c1a64f762aea504459d0db220bc7e886efe59"
+content_hash = "sha256:63f5da6995402ed21545e227c2419cafb694852ed08e87053164e13708530363"
 
 [[metadata.targets]]
 requires_python = ">=3.12"
 
+[[package]]
+name = "aiohappyeyeballs"
+version = "2.4.0"
+requires_python = ">=3.8"
+summary = "Happy Eyeballs for asyncio"
+groups = ["default"]
+files = [
+    {file = "aiohappyeyeballs-2.4.0-py3-none-any.whl", hash = "sha256:7ce92076e249169a13c2f49320d1967425eaf1f407522d707d59cac7628d62bd"},
+    {file = "aiohappyeyeballs-2.4.0.tar.gz", hash = "sha256:55a1714f084e63d49639800f95716da97a1f173d46a16dfcfda0016abb93b6b2"},
+]
+
+[[package]]
+name = "aiohttp"
+version = "3.10.5"
+requires_python = ">=3.8"
+summary = "Async http client/server framework (asyncio)"
+groups = ["default"]
+dependencies = [
+    "aiohappyeyeballs>=2.3.0",
+    "aiosignal>=1.1.2",
+    "async-timeout<5.0,>=4.0; python_version < \"3.11\"",
+    "attrs>=17.3.0",
+    "frozenlist>=1.1.1",
+    "multidict<7.0,>=4.5",
+    "yarl<2.0,>=1.0",
+]
+files = [
+    {file = "aiohttp-3.10.5-cp312-cp312-macosx_10_9_universal2.whl", hash = "sha256:305be5ff2081fa1d283a76113b8df7a14c10d75602a38d9f012935df20731487"},
+    {file = "aiohttp-3.10.5-cp312-cp312-macosx_10_9_x86_64.whl", hash = "sha256:3a1c32a19ee6bbde02f1cb189e13a71b321256cc1d431196a9f824050b160d5a"},
+    {file = "aiohttp-3.10.5-cp312-cp312-macosx_11_0_arm64.whl", hash = "sha256:61645818edd40cc6f455b851277a21bf420ce347baa0b86eaa41d51ef58ba23d"},
+    {file = "aiohttp-3.10.5-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:6c225286f2b13bab5987425558baa5cbdb2bc925b2998038fa028245ef421e75"},
+    {file = "aiohttp-3.10.5-cp312-cp312-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl", hash = "sha256:8ba01ebc6175e1e6b7275c907a3a36be48a2d487549b656aa90c8a910d9f3178"},
+    {file = "aiohttp-3.10.5-cp312-cp312-manylinux_2_17_s390x.manylinux2014_s390x.whl", hash = "sha256:8eaf44ccbc4e35762683078b72bf293f476561d8b68ec8a64f98cf32811c323e"},
+    {file = "aiohttp-3.10.5-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:b1c43eb1ab7cbf411b8e387dc169acb31f0ca0d8c09ba63f9eac67829585b44f"},
+    {file = "aiohttp-3.10.5-cp312-cp312-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:de7a5299827253023c55ea549444e058c0eb496931fa05d693b95140a947cb73"},
+    {file = "aiohttp-3.10.5-cp312-cp312-musllinux_1_2_aarch64.whl", hash = "sha256:4790f0e15f00058f7599dab2b206d3049d7ac464dc2e5eae0e93fa18aee9e7bf"},
+    {file = "aiohttp-3.10.5-cp312-cp312-musllinux_1_2_i686.whl", hash = "sha256:44b324a6b8376a23e6ba25d368726ee3bc281e6ab306db80b5819999c737d820"},
+    {file = "aiohttp-3.10.5-cp312-cp312-musllinux_1_2_ppc64le.whl", hash = "sha256:0d277cfb304118079e7044aad0b76685d30ecb86f83a0711fc5fb257ffe832ca"},
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+    {file = "aiohttp-3.10.5-cp312-cp312-musllinux_1_2_x86_64.whl", hash = "sha256:4f1c9866ccf48a6df2b06823e6ae80573529f2af3a0992ec4fe75b1a510df8a6"},
+    {file = "aiohttp-3.10.5-cp312-cp312-win32.whl", hash = "sha256:dc4826823121783dccc0871e3f405417ac116055bf184ac04c36f98b75aacd12"},
+    {file = "aiohttp-3.10.5-cp312-cp312-win_amd64.whl", hash = "sha256:22c0a23a3b3138a6bf76fc553789cb1a703836da86b0f306b6f0dc1617398abc"},
+    {file = "aiohttp-3.10.5-cp313-cp313-macosx_10_13_universal2.whl", hash = "sha256:7f6b639c36734eaa80a6c152a238242bedcee9b953f23bb887e9102976343092"},
+    {file = "aiohttp-3.10.5-cp313-cp313-macosx_10_13_x86_64.whl", hash = "sha256:f29930bc2921cef955ba39a3ff87d2c4398a0394ae217f41cb02d5c26c8b1b77"},
+    {file = "aiohttp-3.10.5-cp313-cp313-macosx_11_0_arm64.whl", hash = "sha256:f489a2c9e6455d87eabf907ac0b7d230a9786be43fbe884ad184ddf9e9c1e385"},
+    {file = "aiohttp-3.10.5-cp313-cp313-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:123dd5b16b75b2962d0fff566effb7a065e33cd4538c1692fb31c3bda2bfb972"},
+    {file = "aiohttp-3.10.5-cp313-cp313-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl", hash = "sha256:b98e698dc34966e5976e10bbca6d26d6724e6bdea853c7c10162a3235aba6e16"},
+    {file = "aiohttp-3.10.5-cp313-cp313-manylinux_2_17_s390x.manylinux2014_s390x.whl", hash = "sha256:c3b9162bab7e42f21243effc822652dc5bb5e8ff42a4eb62fe7782bcbcdfacf6"},
+    {file = "aiohttp-3.10.5-cp313-cp313-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:1923a5c44061bffd5eebeef58cecf68096e35003907d8201a4d0d6f6e387ccaa"},
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+    {file = "aiohttp-3.10.5-cp313-cp313-musllinux_1_2_aarch64.whl", hash = "sha256:afe16a84498441d05e9189a15900640a2d2b5e76cf4efe8cbb088ab4f112ee57"},
+    {file = "aiohttp-3.10.5-cp313-cp313-musllinux_1_2_i686.whl", hash = "sha256:f8112fb501b1e0567a1251a2fd0747baae60a4ab325a871e975b7bb67e59221f"},
+    {file = "aiohttp-3.10.5-cp313-cp313-musllinux_1_2_ppc64le.whl", hash = "sha256:1e72589da4c90337837fdfe2026ae1952c0f4a6e793adbbfbdd40efed7c63599"},
+    {file = "aiohttp-3.10.5-cp313-cp313-musllinux_1_2_s390x.whl", hash = "sha256:4d46c7b4173415d8e583045fbc4daa48b40e31b19ce595b8d92cf639396c15d5"},
+    {file = "aiohttp-3.10.5-cp313-cp313-musllinux_1_2_x86_64.whl", hash = "sha256:33e6bc4bab477c772a541f76cd91e11ccb6d2efa2b8d7d7883591dfb523e5987"},
+    {file = "aiohttp-3.10.5-cp313-cp313-win32.whl", hash = "sha256:c58c6837a2c2a7cf3133983e64173aec11f9c2cd8e87ec2fdc16ce727bcf1a04"},
+    {file = "aiohttp-3.10.5-cp313-cp313-win_amd64.whl", hash = "sha256:38172a70005252b6893088c0f5e8a47d173df7cc2b2bd88650957eb84fcf5022"},
+    {file = "aiohttp-3.10.5.tar.gz", hash = "sha256:f071854b47d39591ce9a17981c46790acb30518e2f83dfca8db2dfa091178691"},
+]
+
+[[package]]
+name = "aiosignal"
+version = "1.3.1"
+requires_python = ">=3.7"
+summary = "aiosignal: a list of registered asynchronous callbacks"
+groups = ["default"]
+dependencies = [
+    "frozenlist>=1.1.0",
+]
+files = [
+    {file = "aiosignal-1.3.1-py3-none-any.whl", hash = "sha256:f8376fb07dd1e86a584e4fcdec80b36b7f81aac666ebc724e2c090300dd83b17"},
+    {file = "aiosignal-1.3.1.tar.gz", hash = "sha256:54cd96e15e1649b75d6c87526a6ff0b6c1b0dd3459f43d9ca11d48c339b68cfc"},
+]
+
 [[package]]
 name = "arrow"
 version = "1.3.0"
@@ -25,6 +99,20 @@ files = [
     {file = "arrow-1.3.0.tar.gz", hash = "sha256:d4540617648cb5f895730f1ad8c82a65f2dad0166f57b75f3ca54759c4d67a85"},
 ]
 
+[[package]]
+name = "asgiref"
+version = "3.8.1"
+requires_python = ">=3.8"
+summary = "ASGI specs, helper code, and adapters"
+groups = ["default"]
+dependencies = [
+    "typing-extensions>=4; python_version < \"3.11\"",
+]
+files = [
+    {file = "asgiref-3.8.1-py3-none-any.whl", hash = "sha256:3e1e3ecc849832fe52ccf2cb6686b7a55f82bb1d6aee72a58826471390335e47"},
+    {file = "asgiref-3.8.1.tar.gz", hash = "sha256:c343bd80a0bec947a9860adb4c432ffa7db769836c64238fc34bdc3fec84d590"},
+]
+
 [[package]]
 name = "asttokens"
 version = "2.4.1"
@@ -44,7 +132,7 @@ name = "attrs"
 version = "24.2.0"
 requires_python = ">=3.7"
 summary = "Classes Without Boilerplate"
-groups = ["dev"]
+groups = ["default", "dev"]
 dependencies = [
     "importlib-metadata; python_version < \"3.8\"",
 ]
@@ -53,6 +141,28 @@ files = [
     {file = "attrs-24.2.0.tar.gz", hash = "sha256:5cfb1b9148b5b086569baec03f20d7b6bf3bcacc9a42bebf87ffaaca362f6346"},
 ]
 
+[[package]]
+name = "awesomeversion"
+version = "24.6.0"
+requires_python = "<4.0,>=3.8"
+summary = "One version package to rule them all, One version package to find them, One version package to bring them all, and in the darkness bind them."
+groups = ["default"]
+files = [
+    {file = "awesomeversion-24.6.0-py3-none-any.whl", hash = "sha256:6768415b8954b379a25cebf21ed4f682cab10aebf3f82a6640aaaa15ec6821f2"},
+    {file = "awesomeversion-24.6.0.tar.gz", hash = "sha256:aee7ccbaed6f8d84e0f0364080c7734a0166d77ea6ccfcc4900b38917f1efc71"},
+]
+
+[[package]]
+name = "backoff"
+version = "2.2.1"
+requires_python = ">=3.7,<4.0"
+summary = "Function decoration for backoff and retry"
+groups = ["default"]
+files = [
+    {file = "backoff-2.2.1-py3-none-any.whl", hash = "sha256:63579f9a0628e06278f7e47b7d7d5b6ce20dc65c5e96a6f3ca99a6adca0396e8"},
+    {file = "backoff-2.2.1.tar.gz", hash = "sha256:03f829f5bb1923180821643f8753b0502c3b682293992485b0eef2807afa5cba"},
+]
+
 [[package]]
 name = "binaryornot"
 version = "0.4.4"
@@ -148,7 +258,7 @@ files = [
 
 [[package]]
 name = "cffi"
-version = "1.17.0"
+version = "1.17.1"
 requires_python = ">=3.8"
 summary = "Foreign Function Interface for Python calling C code."
 groups = ["default"]
@@ -156,29 +266,29 @@ dependencies = [
     "pycparser",
 ]
 files = [
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 ]
 
+[[package]]
+name = "deepmerge"
+version = "2.0"
+requires_python = ">=3.8"
+summary = "A toolset for deeply merging Python dictionaries."
+groups = ["default"]
+dependencies = [
+    "typing-extensions; python_version <= \"3.9\"",
+]
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+]
+
 [[package]]
 name = "docstring-to-markdown"
 version = "0.15"
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+[[package]]
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+extras = ["async"]
+requires_python = ">=3.8"
+summary = "A simple framework for building complex web applications."
+groups = ["default"]
+dependencies = [
+    "asgiref>=3.2",
+    "flask==3.0.3",
+]
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+]
+
 [[package]]
 name = "fonttools"
 version = "4.53.1"
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 ]
 
+[[package]]
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+groups = ["default"]
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+]
+
 [[package]]
 name = "greenlet"
 version = "3.0.3"
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 ]
 
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+requires_python = ">=3.8"
+summary = "multidict implementation"
+groups = ["default"]
+dependencies = [
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+]
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+]
+
 [[package]]
 name = "packaging"
 version = "24.1"
@@ -693,13 +903,13 @@ files = [
 
 [[package]]
 name = "platformdirs"
-version = "4.2.2"
+version = "4.3.2"
 requires_python = ">=3.8"
 summary = "A small Python package for determining appropriate platform-specific dirs, e.g. a `user data dir`."
 groups = ["dev"]
 files = [
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 [[package]]
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 ]
 
+[[package]]
+name = "pyipp"
+version = "0.0.0"
+requires_python = "<4.0,>=3.9"
+git = "https://github.com/ctalkington/python-ipp"
+revision = "828a23bef76b8bb4c099632aeb8d0377a6595bbf"
+summary = "Asynchronous Python client for Internet Printing Protocol (IPP)"
+groups = ["default"]
+dependencies = [
+    "aiohttp>=3.0.0",
+    "async-timeout==4.0.3; python_version < \"3.11\"",
+    "awesomeversion>=21.10.1",
+    "backoff>=2.2.0",
+    "deepmerge>=1.1.0",
+    "yarl>=1.6.0",
+]
+
 [[package]]
 name = "pylsp-rope"
 version = "0.1.16"
@@ -1006,7 +1233,7 @@ files = [
 
 [[package]]
 name = "rich"
-version = "13.8.0"
+version = "13.8.1"
 requires_python = ">=3.7.0"
 summary = "Render rich text, tables, progress bars, syntax highlighting, markdown and more to the terminal"
 groups = ["default"]
@@ -1016,8 +1243,8 @@ dependencies = [
     "typing-extensions<5.0,>=4.0.0; python_version < \"3.9\"",
 ]
 files = [
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 ]
 
 [[package]]
@@ -1036,29 +1263,29 @@ files = [
 
 [[package]]
 name = "ruff"
-version = "0.6.3"
+version = "0.6.4"
 requires_python = ">=3.7"
 summary = "An extremely fast Python linter and code formatter, written in Rust."
 groups = ["dev"]
 files = [
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 [[package]]
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 summary = "Database Abstraction Library"
 groups = ["default"]
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 [[package]]
@@ -1148,13 +1375,13 @@ files = [
 
 [[package]]
 name = "types-python-dateutil"
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+version = "2.9.0.20240906"
 requires_python = ">=3.8"
 summary = "Typing stubs for python-dateutil"
 groups = ["default"]
 files = [
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 [[package]]
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 ]
 
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+version = "1.11.1"
+requires_python = ">=3.8"
+summary = "Yet another URL library"
+groups = ["default"]
+dependencies = [
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+    "multidict>=4.0",
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+]
+
 [[package]]
 name = "zopfli"
 version = "0.2.3"
diff --git a/pyproject.toml b/pyproject.toml
index a325737..f593f05 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,13 +12,14 @@ license = {text = "EUPL-1.2"}
 dependencies = [
     "weasyprint",
     "jinja2",
-    "flask",
+    "flask[async]>=3.0.3",
     "flask-sqlalchemy",
     "flask-wtf",
     "uuid7",
     "psycopg",
     "flask-weasyprint",
     "python-webpack-boilerplate",
+    "pyipp @ git+https://github.com/ctalkington/python-ipp",
 ]
 
 [tool.pdm.dev-dependencies]
diff --git a/schilder2000/models.py b/schilder2000/models.py
index 322f0fd..06ca33f 100644
--- a/schilder2000/models.py
+++ b/schilder2000/models.py
@@ -40,3 +40,12 @@ class SchildForm(FlaskForm):
         "Vorlage",
         validators=[validators.DataRequired()],
     )
+
+
+class PrintForm(FlaskForm):
+    printer = fields.SelectField("Drucker")
+    copies = fields.IntegerField(
+        "Kopien",
+        default=1,
+        validators=[validators.NumberRange(1, 10), validators.InputRequired()],
+    )
diff --git a/schilder2000/templates/schild.html.j2 b/schilder2000/templates/schild.html.j2
index 40aeed2..f4136d6 100644
--- a/schilder2000/templates/schild.html.j2
+++ b/schilder2000/templates/schild.html.j2
@@ -114,6 +114,16 @@
 				Als PDF anzeigen
 			</a>
 		</div>
+
+		<section><form method="post" action="{{ url_for('.print', ident=schild.ident) }}">
+			{%- for field in printform -%}
+				{{ render_field(field) }}
+			{%- endfor -%}
+
+			<input type="submit" value="Drucken" />
+		</form></section>
+
+
 		<div>
 			<h2>Vorschau</h2>
 			<div class="preview-container" id="preview-container">
diff --git a/schilder2000/views.py b/schilder2000/views.py
index 935e4d9..3874f67 100644
--- a/schilder2000/views.py
+++ b/schilder2000/views.py
@@ -1,9 +1,22 @@
 from . import db
 from .instance import list_templates, list_images
-from .models import Schild, SchildForm
+from .models import Schild, SchildForm, PrintForm
 
-from flask import Blueprint, render_template, request, redirect, url_for
+from flask import (
+    Blueprint,
+    current_app as app,
+    flash,
+    render_template,
+    request,
+    redirect,
+    url_for,
+)
 
+import flask_weasyprint
+
+from pyipp import IPP
+from pyipp.enums import IppOperation
+from pyipp.exceptions import IPPError
 
 bp = Blueprint("views", __name__)
 
@@ -29,13 +42,45 @@ def _do_schild_form(schild):
 def schild(ident):
     schild = db.get_or_404(Schild, ident)
     form = _do_schild_form(schild)
+    printform = PrintForm()
+    printform.printer.choices = list(app.config["PRINTERS"])
     return render_template(
         "schild.html.j2",
         schild=schild,
         form=form,
+        printform=printform,
     )
 
 
+@bp.route("/schild/<ident>/print", methods=["POST"])
+async def print(ident):
+    form = PrintForm(request.form)
+    form.printer.choices = list(app.config["PRINTERS"])
+    if form.validate():
+        async with IPP(app.config["PRINTERS"][form.printer.data]) as ipp:
+            try:
+                response = await ipp.execute(
+                    IppOperation.PRINT_JOB,
+                    {
+                        "operation-attributes-tag": {
+                            "requesting-user-name": "schilder2000",
+                            "job-name": f"schild-{ident}.pdf",
+                            "document-name": f"schild-{ident}.pdf",
+                            "document-format": "application/pdf",
+                            "copies": form.copies.data,
+                            "job-media-sheets": form.copies.data,
+                        },
+                        "data": flask_weasyprint.HTML(url_for("instance.schild_html", ident=ident)).write_pdf(),
+                    },
+                )
+                flash("Druckt …")
+                app.logger.debug("print %s: %r", ident, response)
+            except IPPError:
+                flash("Druck fehlgeschlagen!", "error")
+                pass
+        return redirect(url_for(".schild", ident=ident))
+
+
 @bp.route("/create", methods=["GET", "POST"])
 def create():
     schild = Schild()
-- 
GitLab