Modrinth/apps/app-frontend/src/store/install.js

import { defineStore } from 'pinia'
import {
  add_project_from_version,
  check_installed,
  get,
  get_projects,
  list,
  remove_project,
} from '@/helpers/profile.js'
import { handleError } from '@/store/notifications.js'
import { get_project, get_version_many } from '@/helpers/cache.js'
import { create_profile_and_install as packInstall } from '@/helpers/pack.js'
import { trackEvent } from '@/helpers/analytics.js'
import dayjs from 'dayjs'

export const useInstall = defineStore('installStore', {
  state: () => ({
    installConfirmModal: null,
    modInstallModal: null,
    incompatibilityWarningModal: null,
  }),
  actions: {
    setInstallConfirmModal(ref) {
      this.installConfirmModal = ref
    },
    showInstallConfirmModal(project, version_id, onInstall, createInstanceCallback) {
      this.installConfirmModal.show(project, version_id, onInstall, createInstanceCallback)
    },
    setIncompatibilityWarningModal(ref) {
      this.incompatibilityWarningModal = ref
    },
    showIncompatibilityWarningModal(instance, project, versions, selected, onInstall) {
      this.incompatibilityWarningModal.show(instance, project, versions, selected, onInstall)
    },
    setModInstallModal(ref) {
      this.modInstallModal = ref
    },
    showModInstallModal(project, versions, onInstall) {
      this.modInstallModal.show(project, versions, onInstall)
    },
  },
})

export const install = async (
  projectId,
  versionId,
  instancePath,
  source,
  callback = () => {},
  createInstanceCallback = () => {},
) => {
  const project = await get_project(projectId, 'must_revalidate').catch(handleError)

  if (project.project_type === 'modpack') {
    const version = versionId ?? project.versions[project.versions.length - 1]
    const packs = await list().catch(handleError)

    if (packs.length === 0 || !packs.find((pack) => pack.linked_data?.project_id === project.id)) {
      await packInstall(
        project.id,
        version,
        project.title,
        project.icon_url,
        createInstanceCallback,
      ).catch(handleError)

      trackEvent('PackInstall', {
        id: project.id,
        version_id: version,
        title: project.title,
        source,
      })

      callback(version)
    } else {
      const install = useInstall()
      install.showInstallConfirmModal(project, version, callback, createInstanceCallback)
    }
  } else {
    if (instancePath) {
      const [instance, instanceProjects, versions] = await Promise.all([
        await get(instancePath).catch(handleError),
        await get_projects(instancePath).catch(handleError),
        await get_version_many(project.versions, 'must_revalidate'),
      ])

      const projectVersions = versions.sort(
        (a, b) => dayjs(b.date_published) - dayjs(a.date_published),
      )

      let version
      if (versionId) {
        version = projectVersions.find((x) => x.id === versionId)
      } else {
        version = projectVersions.find(
          (v) =>
            v.game_versions.includes(instance.game_version) &&
            (project.project_type === 'mod'
              ? v.loaders.includes(instance.loader) || v.loaders.includes('minecraft')
              : true),
        )
      }

      if (!version) {
        version = projectVersions[0]
      }

      if (
        version.game_versions.includes(instance.game_version) &&
        (project.project_type === 'mod'
          ? version.loaders.includes(instance.loader) || version.loaders.includes('minecraft')
          : true)
      ) {
        for (const [path, file] of Object.entries(instanceProjects)) {
          if (file.metadata && file.metadata.project_id === project.id) {
            await remove_project(instance.path, path)
          }
        }

        await add_project_from_version(instance.path, version.id).catch(handleError)
        await installVersionDependencies(instance, version)

        trackEvent('ProjectInstall', {
          loader: instance.loader,
          game_version: instance.game_version,
          id: project.id,
          project_type: project.project_type,
          version_id: version.id,
          title: project.title,
          source,
        })

        callback(version.id)
      } else {
        const install = useInstall()
        install.showIncompatibilityWarningModal(
          instance,
          project,
          projectVersions,
          version,
          callback,
        )
      }
    } else {
      const versions = (await get_version_many(project.versions).catch(handleError)).sort(
        (a, b) => dayjs(b.date_published) - dayjs(a.date_published),
      )

      const install = useInstall()
      install.showModInstallModal(project, versions, callback)
    }
  }

  // If project is modpack:
  //   - We check all available instances if modpack is already installed
  //     If true: show confirmation modal
  //     If false: install it (latest version if passed version is null)
  // If project is mod:
  //   - If instance is selected:
  //        - If project is already installed
  //          We first uninstall the project
  //        - If no version is selected, we look check the instance for versions to select based on the versions
  //            - If there are no versions, we show the incompat modal
  //        - If a version is selected, and the version is incompatible, we show the incompat modal
  //   - Version is inarlled, as well as version dependencies
}

export const installVersionDependencies = async (profile, version) => {
  for (const dep of version.dependencies) {
    if (dep.dependency_type !== 'required') continue
    // disallow fabric api install on quilt
    if (dep.project_id === 'P7dR8mSH' && profile.loader === 'quilt') continue
    if (dep.version_id) {
      if (
        dep.project_id &&
        (await check_installed(profile.path, dep.project_id).catch(handleError))
      )
        continue
      await add_project_from_version(profile.path, dep.version_id)
    } else {
      if (
        dep.project_id &&
        (await check_installed(profile.path, dep.project_id).catch(handleError))
      )
        continue

      const depProject = await get_project(dep.project_id, 'must_revalidate').catch(handleError)

      const depVersions = (
        await get_version_many(depProject.versions, 'must_revalidate').catch(handleError)
      ).sort((a, b) => dayjs(b.date_published) - dayjs(a.date_published))

      const latest = depVersions.find(
        (v) => v.game_versions.includes(profile.game_version) && v.loaders.includes(profile.loader),
      )
      if (latest) {
        await add_project_from_version(profile.path, latest.id).catch(handleError)
      }
    }
  }
}