1 files changed, 159 insertions, 0 deletions
diff --git a/docker/bin/getpackage.py b/docker/bin/getpackage.py
new file mode 100755
index 0000000..0091dd6
--- /dev/null
+++ b/docker/bin/getpackage.py
@@ -0,0 +1,159 @@
+#!/usr/bin/env python3
+# Create a list of package names required to build supplied AUR package.
+# packages present in the official repos will be ignored.
+
+# relevant docs:
+# AUR API:
+# https://wiki.archlinux.org/title/Aurweb_RPC_interface
+# Package API:
+# https://wiki.archlinux.org/title/Official_repositories_web_interface
+
+import os
+import sys
+import requests
+import json
+
+#from packaging import version
+#version.parse
+
+def eprint(*args, **kwargs):
+    print(*args, file=sys.stderr, **kwargs)
+
+
+# TODO we should actually use version limits instead
+def sanitize_name(_name):
+    _name = _name.replace('<','=')
+    _name = _name.replace('>','=')
+
+    return _name.split('=')[0]
+
+
+# TODO: Don't just take the first one. prioritize maybe Votes, version, git, bin, ...
+def aur_search_package(_name):
+    _name = sanitize_name(_name)
+
+    data = requests.get(f'https://aur.archlinux.org/rpc/?v=5&type=search&by=name&arg={_name}').json()
+
+    for r in data['results']:
+        p = aur_get_package(r['Name'])
+        if p is None:
+            continue
+
+        if 'Provides' in p:
+            for prov in p['Provides']:
+                if sanitize_name(prov) == _name:
+                    return p
+
+    return None
+
+
+def aur_get_package(_name):
+    _name = sanitize_name(_name)
+
+    data = requests.get(f'https://aur.archlinux.org/rpc/?v=5&type=info&arg={_name}').json()
+
+    if len(data['results']) != 1:
+        return aur_search_package(_name)
+
+    return data['results'][0]
+
+
+def repo_search_package(_name):
+    _name = sanitize_name(_name)
+
+    data = requests.get(f'https://archlinux.org/packages/search/json/?q={_name}').json()
+    for r in data['results']:
+        p = repo_get_package(r['pkgname'], False)
+        if p is None:
+            continue
+
+        if 'provides' in p:
+            for prov in p['provides']:
+                if sanitize_name(prov) == _name:
+                    return p
+
+    return None
+
+
+def repo_get_package(_name, _search=True):
+    _name = sanitize_name(_name)
+
+    data = requests.get(f'https://archlinux.org/packages/search/json/?name={_name}').json()
+
+    if len(data['results']) != 1:
+        if _search:
+            return repo_search_package(_name)
+        else:
+            return None
+
+    return data['results'][0]
+
+
+def build_aur_dependencies(_pkgname):
+    _pkgname = sanitize_name(_pkgname)
+
+    ret = []
+
+    maybe_deps = aur_get_package(_pkgname)
+    if maybe_deps is None:
+        eprint(f'WARNING: {_pkgname} Was not found in AUR!')
+        return []
+    elif 'Depends' not in maybe_deps:
+        return []
+
+    deps = maybe_deps['Depends']
+
+    for dep in deps:
+        # if package exists in official repo
+        if repo_get_package(dep) is not None:
+            continue
+
+        # detect depency cycles
+        if dep in ret:
+            continue
+
+        ret.append(dep)
+        ret.insert(0,dep)
+        ret = build_aur_dependencies(dep) + ret
+
+    return ret
+
+if len(sys.argv) <= 1:
+    eprint('CRITICAL: No package name provided.')
+    exit(1)
+
+PKG=sys.argv[1]
+
+# name: version
+TO_BUILD={}
+
+maybe_base_pkg_info = aur_get_package(PKG)
+if maybe_base_pkg_info is None:
+    eprint(f'CRITICAL: Package {PKG} not found in AUR')
+    exit(1)
+base_pkg_info = maybe_base_pkg_info
+
+aur_deps = build_aur_dependencies(PKG)
+
+# We rely on the rigth order here.
+# The dependency must be before the package that depends on it,
+# otherwise makepkg will fail
+for dep in aur_deps:
+    pkg = aur_get_package(dep)
+
+    if pkg is None:
+        eprint(f'WARNING: Dependency {dep} Unmet!')
+        continue
+
+    TO_BUILD[pkg['Name']] = {
+            'version':pkg['Version'],
+            'base':pkg['PackageBase']
+        }
+
+TO_BUILD[base_pkg_info['Name']] = {
+        'version':base_pkg_info['Version'],
+        'base':base_pkg_info['PackageBase']
+        }
+
+for e in TO_BUILD:
+    print(f'{e}\t{TO_BUILD[e]["base"]}\t{TO_BUILD[e]["version"]}')