Automatically calculate template snakebids version

- Based first on latest version from pypi, falling back to dependency
  version

pyproject.toml

@@ -12,9 +12,7 @@ authors = [
     "Jason Kai <[email protected]>",
 ]
 license = "MIT"
-packages = [
-    { include = "snakebids" }
-]
+packages = [{ include = "snakebids" }]
 exclude = ["snakebids/tests/**"]
 
 [tool.poetry-dynamic-versioning]
@@ -26,12 +24,11 @@ bump = true
 
 [tool.poetry-dynamic-versioning.substitution]
 files = [
-    'snakebids/project_template/cookiecutter.json',
-    'snakebids/__init__.py'
+    'snakebids/__init__.py',
 ]
 patterns = [
     "(^\\s+\"snakebids_version\":\\s*\")[^'\"]*(\")",
-    "(^__version__\\s*(?::.*?)?=\\s*['\"])[^'\"]*(['\"])"
+    "(^__version__\\s*(?::.*?)?=\\s*['\"])[^'\"]*(['\"])",
 ]
 
 [tool.poetry.dependencies]
@@ -42,7 +39,6 @@ snakemake = [
     { version = ">=7.18.2", python = ">=3.11" },
 ]
 PyYAML = "^6"
-cookiecutter = "^2.1.1"
 typing-extensions = ">=3.10.0"
 attrs = ">=21.2.0,<24"
 boutiques = "^0.5.25"
@@ -57,15 +53,18 @@ importlib-resources = ">=5.12.0,<7"
 #  on the python version being used.
 numpy = [
     { version = "<=1.24.4", python = "<3.9" },
-    { version = ">=1.23.2", python = ">=3.11" }
+    { version = ">=1.23.2", python = ">=3.11" },
 ]
 # Use minimum of 1.10.0 because of security vulnerability
 scipy = [
     { version = ">=1.10.0,<=1.10.1", python = "<3.9" },
-    { version = ">=1.10.0", python = ">=3.9" }
+    { version = ">=1.10.0", python = ">=3.9" },
 ]
+# minimum 8.2.0 to use post-copy mesages
 copier = ">=8.2.0"
 jinja2-time = ">=0.2.0"
+# minimum 2.31.0 because of security vulnerability
+requests = ">=2.31.0"
 
 [tool.poetry.group.dev.dependencies]
 black = "^23.1.0"
@@ -88,6 +87,7 @@ ruff = "^0.0.285"
 pytest-xdist = "^3.3.1"
 pytest-split = "^0.8.1"
 tomli = "^2.0.1"
+requests-mock = "^1.11.0"
 
 [tool.poetry.scripts]
 snakebids = "snakebids.admin:main"
@@ -133,11 +133,11 @@ reportImportCycles = false
 
 [tool.ruff]
 select = [
-    "E", # pycodestyle error
-    "F", # pyflakes
-    "PL", # pylint
-    "RUF", # ruff
-    "UP", #pyupgrade
+    "E",    # pycodestyle error
+    "F",    # pyflakes
+    "PL",   # pylint
+    "RUF",  # ruff
+    "UP",   #pyupgrade
     "T100", # debugger
 ]
 ignore = ["PLR0913"]

snakebids/jinja2_ext/snakebids_version.py

@@ -0,0 +1,29 @@
+from __future__ import annotations
+
+import importlib.metadata as impm
+import re
+
+import jinja2.parser
+import requests
+from jinja2.ext import Extension
+
+
+class SnakebidsVersionExtension(Extension):
+    def __init__(self, env: jinja2.Environment):
+        env.globals["snakebids_version"] = self._lookup_version()  # type: ignore
+        super().__init__(env)
+
+    def _lookup_version(self):
+        request = requests.get("https://pypi.org/pypi/snakebids/json")
+        version_regex = re.compile(r"\d+\.\d+\.\d+")
+        try:
+            request.raise_for_status()
+            version = request.json()["info"]["version"]
+            if not re.fullmatch(version_regex, version):
+                raise TypeError()
+            return version
+        except (requests.HTTPError, KeyError, TypeError):
+            version = impm.version("snakebids")
+            if version == "0.0.0" or not re.fullmatch(version_regex, version):
+                return None
+            return version