From c0ba67a5661a9c9fa9344de4dca040895878ea80 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Bidoul?= <stephane.bidoul@acsone.eu>
Date: Sat, 23 Sep 2023 12:39:58 +0200
Subject: [PATCH] Add pre-commit hook to generate external dependencies

---
 .pre-commit-hooks.yaml             |  7 ++++
 setup.py                           |  4 ++
 tools/gen_external_dependencies.py | 63 ++++++++++++++++++++++++++++++
 3 files changed, 74 insertions(+)
 create mode 100644 tools/gen_external_dependencies.py

diff --git a/.pre-commit-hooks.yaml b/.pre-commit-hooks.yaml
index 8aa5c4ecf..1a89f9ece 100644
--- a/.pre-commit-hooks.yaml
+++ b/.pre-commit-hooks.yaml
@@ -32,3 +32,10 @@
   pass_filenames: false
   language: python
   files: (__manifest__\.py|__openerp__\.py|__terp__\.py)$
+
+- id: oca-gen-external-dependencies
+  name: Generate requirements.txt for an addons directory
+  entry: oca-gen-external-dependencies
+  language: python
+  pass_filenames: false
+  files: (__manifest__\.py|__openerp__\.py|__terp__\.py|setup\.py|pyproject\.toml)$
diff --git a/setup.py b/setup.py
index 46f9215b5..27d20ee30 100644
--- a/setup.py
+++ b/setup.py
@@ -38,6 +38,9 @@
         "selenium",
         "twine",
         "wheel",
+        "pyproject_dependencies ; python_version>='3.7'",
+        "setuptools-odoo",  # for oca-gen-external-dependencies
+        "whool",  # for oca-gen-external-dependencies
     ],
     python_requires=">=3.6",
     classifiers=[
@@ -64,6 +67,7 @@
             "oca-publish-modules = tools.publish_modules:main",
             "oca-gen-addon-readme = tools.gen_addon_readme:gen_addon_readme",
             "oca-gen-addon-icon = tools.gen_addon_icon:gen_addon_icon",
+            "oca-gen-external-dependencies = tools.gen_external_dependencies:main",
             "oca-towncrier = tools.oca_towncrier:oca_towncrier",
             "oca-create-migration-issue = tools.create_migration_issue:main",
             "oca-update-pre-commit-excluded-addons = "
diff --git a/tools/gen_external_dependencies.py b/tools/gen_external_dependencies.py
new file mode 100644
index 000000000..3a73ea6b6
--- /dev/null
+++ b/tools/gen_external_dependencies.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python3
+"""Generate requirements.txt with external dependencies of Odoo addons."""
+
+import os
+import subprocess
+import sys
+from pathlib import Path
+
+
+def main():
+    if sys.version_info < (3, 7):
+        raise SystemExit("Python 3.7+ is required.")
+
+    projects = [
+        *Path.glob(Path.cwd(), "*/pyproject.toml"),
+        *Path.glob(Path.cwd(), "setup/*/setup.py"),
+    ]
+
+    if not projects:
+        sys.exit(0)
+
+    env = os.environ.copy()
+    env.update(
+        {
+            # for better performance, since we are not interested in precise versions
+            "WHOOL_POST_VERSION_STRATEGY_OVERRIDE": "none",
+            "SETUPTOOLS_ODOO_POST_VERSION_STRATEGY_OVERRIDE": "none",
+        }
+    )
+
+    result = subprocess.run(
+        [
+            sys.executable,
+            "-m",
+            "pyproject_dependencies",
+            "--no-isolation",  # whool and setuptools Odoo must be preinstalled
+            "--name-filter",
+            r"^(odoo$|odoo\d*-addon-)",  # filter out odoo and odoo addons
+            *projects,
+        ],
+        env=env,
+        check=False,
+        stdout=subprocess.PIPE,
+        text=True,
+    )
+
+    if result.returncode != 0:
+        sys.exit(result.returncode)
+
+    requirements = result.stdout
+
+    requirements_path = Path("requirements.txt")
+    if requirements:
+        with requirements_path.open("w") as f:
+            f.write("# generated from manifests external_dependencies\n")
+            f.write(requirements)
+    else:
+        if requirements_path.exists():
+            requirements_path.unlink()
+
+
+if __name__ == "__main__":
+    main()