install version matching filters if possible (#6932)

apps/app-frontend/src/pages/Browse.vue

@@ -25,6 +25,7 @@ import {
 	preferencesDiffer,
 	provideBrowseManager,
 	requestInstall,
+	resolveInstallPlan,
 	stripServerRuntimeInstallFilters,
 	stripServerRuntimeInstallOverrides,
 	useBrowseSearch,
@@ -798,6 +799,27 @@ async function chooseInstanceInstallVersion(
 	return { versionId: selectedVersion.id }
 }
 
+async function chooseFilterMatchingInstallVersion(
+	project: Labrinth.Search.v3.ResultSearchProject,
+	projectTypeValue: string,
+) {
+	const plan = await resolveInstallPlan({
+		project: {
+			project_id: project.project_id,
+			title: project.title,
+			icon_url: project.icon_url,
+		},
+		contentType: projectTypeValue as BrowseInstallContentType,
+		selectedFilters: searchState.currentFilters.value,
+		providedFilters: combinedProvidedFilters.value,
+		overriddenProvidedFilterTypes: searchState.overriddenProvidedFilterTypes.value,
+		targetPreferences: {},
+		getProjectVersions: getInstallProjectVersions,
+	})
+
+	return { versionId: plan.versionId }
+}
+
 function getCardActions(
 	result: Labrinth.Search.v3.ResultSearchProject,
 	currentProjectType: string,
@@ -927,7 +949,9 @@ function getCardActions(
 				try {
 					const selectedInstall = instance.value
 						? await chooseInstanceInstallVersion(projectResult, currentProjectType)
-						: { versionId: null as string | null }
+						: isModpack
+							? await chooseFilterMatchingInstallVersion(projectResult, currentProjectType)
+							: { versionId: null as string | null }
 					if (selectedInstall === null) {
 						setProjectInstalling(projectResult.project_id, false)
 						return

apps/app-frontend/src/providers/content-install.ts

@@ -1,6 +1,11 @@
 import type { Labrinth } from '@modrinth/api-client'
 import type { ContentInstallInstance, ContentInstallProjectInfo, ContentItem } from '@modrinth/ui'
-import { createContext, defineMessage, useVIntl } from '@modrinth/ui'
+import {
+	createContext,
+	defineMessage,
+	getLatestMatchingInstallVersion,
+	useVIntl,
+} from '@modrinth/ui'
 import { convertFileSrc } from '@tauri-apps/api/core'
 import { openUrl } from '@tauri-apps/plugin-opener'
 import dayjs from 'dayjs'
@@ -813,7 +818,22 @@ export function createContentInstall(opts: {
 		}
 
 		if (project.project_type === 'modpack') {
-			const version = versionId ?? project.versions[project.versions.length - 1]
+			let version = versionId ?? null
+			if (!version) {
+				const hasHints = !!(hints?.preferredGameVersion || hints?.preferredLoader)
+				if (hasHints) {
+					const versions = (await get_version_many(
+						project.versions,
+						'must_revalidate',
+					)) as Labrinth.Versions.v2.Version[]
+					const matching = getLatestMatchingInstallVersion(versions, {
+						gameVersions: hints?.preferredGameVersion ? [hints.preferredGameVersion] : undefined,
+						loaders: hints?.preferredLoader ? [hints.preferredLoader] : undefined,
+					})
+					version = matching?.id ?? null
+				}
+				version ??= project.versions[project.versions.length - 1]
+			}
 			const packs = await list()
 			const existingPack = packs.find((pack) => pack.link?.project_id === project.id)