feat: add download functionality for licenses and enhance plugin detail view

server/lib/downloadService.js

@@ -0,0 +1,65 @@
+import { fetchRepo, fetchReleases, normalizeRepoInput } from "./pluginService.js";
+
+export function buildDownloadUrl(repoEntry, version, sourceType = "release") {
+    const ownerRepo = repoEntry.repo;
+    if (repoEntry.provider === "gitea") {
+        const sanitizedBase = (repoEntry.baseUrl || "").replace(/\/$/, "");
+        const [owner, repo] = ownerRepo.split("/");
+        return `${sanitizedBase}/repos/${owner}/${repo}/archive/${version}.zip`;
+    }
+    const refType = sourceType === "release" ? "tags" : "heads";
+    return `https://codeload.github.com/${ownerRepo}/zip/refs/${refType}/${version}`;
+}
+
+export async function resolveRepoDownload(repoEntry, requestedVersion = "latest") {
+    const normalizedEntry = normalizeRepoInput(repoEntry, {
+        repo: repoEntry.repo,
+        provider: repoEntry.provider,
+        baseUrl: repoEntry.baseUrl
+    });
+    if (!normalizedEntry) {
+        throw new Error("Kon repository gegevens niet bepalen.");
+    }
+
+    const repoInfo = await fetchRepo(normalizedEntry);
+    const releases = await fetchReleases(normalizedEntry).catch(() => []);
+
+    let targetVersion = requestedVersion || "latest";
+    let sourceType = "release";
+
+    if (targetVersion === "latest") {
+        if (releases.length > 0) {
+            targetVersion = releases[0].tag;
+        } else {
+            targetVersion = repoInfo.defaultBranch || "main";
+            sourceType = "branch";
+        }
+    } else {
+        const found = releases.find((release) => release.tag === targetVersion || release.name === targetVersion);
+        if (!found) {
+            sourceType = "branch";
+        } else {
+            targetVersion = found.tag;
+        }
+    }
+
+    const downloadUrl = buildDownloadUrl(normalizedEntry, targetVersion, sourceType);
+    const filenameBase = repoInfo.name || normalizedEntry.repo.split("/").pop() || "plugin";
+    return {
+        url: downloadUrl,
+        version: targetVersion,
+        sourceType,
+        filename: `${filenameBase}-${targetVersion}.zip`,
+        repoEntry: normalizedEntry,
+        repoInfo
+    };
+}
+
+export async function getDownloadSourceForLicense(licenseRow, requestedVersion = "latest") {
+    const repoEntry = {
+        repo: licenseRow.repo_name,
+        provider: licenseRow.repo_provider,
+        baseUrl: licenseRow.repo_base_url
+    };
+    return resolveRepoDownload(repoEntry, requestedVersion);
+}