feat: request snippets plugin (#6910)

src/core/plugins/request-snippets/selectors.js

@@ -0,0 +1,45 @@
+import { createSelector } from "reselect"
+import { Map } from "immutable"
+
+const state = state => state || Map()
+
+export const getGenerators = createSelector(
+  state,
+  state => {
+    const languageKeys = state
+      .get("languages")
+    const generators = state
+      .get("generators", Map())
+    if(!languageKeys) {
+      return generators
+    }
+    return generators
+      .filter((v, key) => languageKeys.includes(key))
+  }
+)
+
+export const getSnippetGenerators = (state) => ({ fn }) => {
+  const getGenFn = (key) => fn[`requestSnippetGenerator_${key}`]
+  return getGenerators(state)
+    .map((gen, key) => {
+      const genFn = getGenFn(key)
+      if(typeof genFn !== "function") {
+        return null
+      }
+
+      return gen.set("fn", genFn)
+    })
+    .filter(v => v)
+}
+
+export const getActiveLanguage = createSelector(
+  state,
+  state => state
+    .get("activeLanguage")
+)
+
+export const getDefaultExpanded = createSelector(
+  state,
+  state => state
+    .get("defaultExpanded")
+)