Detect required-version from config file (#233)

1. If defined use version input
2. If defined use uv-file input
3. If defined use pyproject-file input
4. Search for required-version in uv.toml in repo root
5. Search for required-version in pyproject.toml in repo root
6. Use latest

Closes: #215

src/utils/inputs.ts

@@ -2,6 +2,8 @@ import * as core from "@actions/core";
 import path from "node:path";
 
 export const version = core.getInput("version");
+export const pyProjectFile = core.getInput("pyproject-file");
+export const uvFile = core.getInput("uv-file");
 export const pythonVersion = core.getInput("python-version");
 export const checkSum = core.getInput("checksum");
 export const enableCache = getEnableCache();

src/utils/pyproject.ts

@@ -0,0 +1,38 @@
+import fs from "node:fs";
+import * as core from "@actions/core";
+import * as toml from "@iarna/toml";
+
+export function getUvVersionFromConfigFile(
+  filePath: string,
+): string | undefined {
+  if (!fs.existsSync(filePath)) {
+    core.warning(`Could not find file: ${filePath}`);
+    return undefined;
+  }
+  let requiredVersion = getRequiredVersion(filePath);
+
+  if (requiredVersion?.startsWith("==")) {
+    requiredVersion = requiredVersion.slice(2);
+  }
+  if (requiredVersion !== undefined) {
+    core.info(
+      `Found required-version for uv in ${filePath}: ${requiredVersion}`,
+    );
+  }
+  return requiredVersion;
+}
+
+function getRequiredVersion(filePath: string): string | undefined {
+  const fileContent = fs.readFileSync(filePath, "utf-8");
+
+  if (filePath.endsWith("pyproject.toml")) {
+    const tomlContent = toml.parse(fileContent) as {
+      tool?: { uv?: { "required-version"?: string } };
+    };
+    return tomlContent?.tool?.uv?.["required-version"];
+  }
+  const tomlContent = toml.parse(fileContent) as {
+    "required-version"?: string;
+  };
+  return tomlContent["required-version"];
+}