Save track data method on base track model

packages/core/assemblyManager/loadRefNameMap.ts

@@ -0,0 +1,65 @@
+import { BaseOptions, checkRefName, RefNameAliases } from './util'
+import RpcManager from '../rpc/RpcManager'
+import { when } from '../util'
+
+export interface BasicRegion {
+  start: number
+  end: number
+  refName: string
+  assemblyName: string
+}
+
+export async function loadRefNameMap(
+  assembly: {
+    name: string
+    regions: BasicRegion[] | undefined
+    refNameAliases: RefNameAliases | undefined
+    getCanonicalRefName: (arg: string) => string
+    rpcManager: RpcManager
+  },
+  adapterConfig: unknown,
+  options: BaseOptions,
+  signal?: AbortSignal,
+) {
+  const { sessionId } = options
+  await when(() => !!(assembly.regions && assembly.refNameAliases), {
+    signal,
+    name: 'when assembly ready',
+  })
+
+  const refNames = (await assembly.rpcManager.call(
+    sessionId,
+    'CoreGetRefNames',
+    {
+      adapterConfig,
+      signal,
+      ...options,
+    },
+    { timeout: 1000000 },
+  )) as string[]
+
+  const { refNameAliases } = assembly
+  if (!refNameAliases) {
+    throw new Error(`error loading assembly ${assembly.name}'s refNameAliases`)
+  }
+
+  const refNameMap = Object.fromEntries(
+    refNames.map(name => {
+      checkRefName(name)
+      return [assembly.getCanonicalRefName(name), name]
+    }),
+  )
+
+  // make the reversed map too
+  const reversed = Object.fromEntries(
+    Object.entries(refNameMap).map(([canonicalName, adapterName]) => [
+      adapterName,
+      canonicalName,
+    ]),
+  )
+
+  return {
+    forwardMap: refNameMap,
+    reverseMap: reversed,
+  }
+}

packages/core/assemblyManager/util.ts

@@ -0,0 +1,70 @@
+import { AnyConfigurationModel } from '../configuration'
+import jsonStableStringify from 'json-stable-stringify'
+import { BaseRefNameAliasAdapter } from '../data_adapters/BaseAdapter'
+import PluginManager from '../PluginManager'
+import { BasicRegion } from './loadRefNameMap'
+
+export type RefNameAliases = Record<string, string>
+
+export interface BaseOptions {
+  signal?: AbortSignal
+  sessionId: string
+  statusCallback?: Function
+}
+
+export async function getRefNameAliases(
+  config: AnyConfigurationModel,
+  pm: PluginManager,
+  signal?: AbortSignal,
+) {
+  const type = pm.getAdapterType(config.type)
+  const CLASS = await type.getAdapterClass()
+  const adapter = new CLASS(config, undefined, pm) as BaseRefNameAliasAdapter
+  return adapter.getRefNameAliases({ signal })
+}
+
+export async function getCytobands(
+  config: AnyConfigurationModel,
+  pm: PluginManager,
+) {
+  const type = pm.getAdapterType(config.type)
+  const CLASS = await type.getAdapterClass()
+  const adapter = new CLASS(config, undefined, pm)
+
+  // @ts-expect-error
+  return adapter.getData()
+}
+
+export async function getAssemblyRegions(
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  assembly: any,
+  adapterConfig: AnyConfigurationModel,
+  signal?: AbortSignal,
+): Promise<BasicRegion[]> {
+  const sessionId = 'loadRefNames'
+  return assembly.rpcManager.call(
+    sessionId,
+    'CoreGetRegions',
+    {
+      adapterConfig,
+      sessionId,
+      signal,
+    },
+    { timeout: 1000000 },
+  )
+}
+
+const refNameRegex = new RegExp(
+  '[0-9A-Za-z!#$%&+./:;?@^_|~-][0-9A-Za-z!#$%&*+./:;=?@^_|~-]*',
+)
+
+// Valid refName pattern from https://samtools.github.io/hts-specs/SAMv1.pdf
+export function checkRefName(refName: string) {
+  if (!refNameRegex.test(refName)) {
+    throw new Error(`Encountered invalid refName: "${refName}"`)
+  }
+}
+
+export function getAdapterId(adapterConf: unknown) {
+  return jsonStableStringify(adapterConf)
+}

packages/core/package.json

@@ -46,6 +46,7 @@
     "dompurify": "^3.0.0",
     "escape-html": "^1.0.3",
     "fast-deep-equal": "^3.1.3",
+    "file-saver": "^2.0.0",
     "generic-filehandle": "^3.0.0",
     "http-range-fetcher": "^2.0.0",
     "is-object": "^1.0.1",

packages/core/pluggableElementTypes/models/BaseTrackModel.ts

@@ -1,3 +1,4 @@
+import { lazy } from 'react'
 import { transaction } from 'mobx'
 import {
   getRoot,
@@ -16,10 +17,19 @@ import {
 } from '../../configuration'
 import PluginManager from '../../PluginManager'
 import { MenuItem } from '../../ui'
+import { Save } from '../../ui/Icons'
 import { getContainingView, getEnv, getSession } from '../../util'
 import { isSessionModelWithConfigEditing } from '../../util/types'
 import { ElementId } from '../../util/types/mst'
 
+// locals
+import { stringifyGFF3 } from './saveTrackFileTypes/gff3'
+import { stringifyGBK } from './saveTrackFileTypes/genbank'
+import { stringifyBED } from './saveTrackFileTypes/bed'
+
+// lazies
+const SaveTrackDataDlg = lazy(() => import('./components/SaveTrackData'))
+
 export function getCompatibleDisplays(self: IAnyStateTreeNode) {
   const { pluginManager } = getEnv(self)
   const view = getContainingView(self)
@@ -181,6 +191,27 @@ export function createBaseTrackModel(
         })
       },
     }))
+    .views(() => ({
+      saveTrackFileFormatOptions() {
+        return {
+          gff3: {
+            name: 'GFF3',
+            extension: 'gff3',
+            callback: stringifyGFF3,
+          },
+          genbank: {
+            name: 'GenBank',
+            extension: 'gbk',
+            callback: stringifyGBK,
+          },
+          bed: {
+            name: 'BED',
+            extension: 'bed',
+            callback: stringifyBED,
+          },
+        }
+      },
+    }))
     .views(self => ({
       /**
        * #method
@@ -194,6 +225,19 @@ export function createBaseTrackModel(
 
         return [
           ...menuItems,
+          {
+            label: 'Save track data',
+            icon: Save,
+            onClick: () => {
+              getSession(self).queueDialog(handleClose => [
+                SaveTrackDataDlg,
+                {
+                  model: self,
+                  handleClose,
+                },
+              ])
+            },
+          },
           ...(compatDisp.length > 1
             ? [
                 {