Add method to convert the file explorer url to pandas

packages/core/components/Modal/CodeSnippet/CodeSnippet.module.css

@@ -25,4 +25,39 @@
 .code {
     cursor: text;
     user-select: text;
-}
+}
+
+.button-menu, .button-menu button {
+    background-color: var(--secondary-background-color);
+    color: var(--secondary-text-color);
+}
+
+.button-menu i, .button-menu li > div {
+    color: var(--secondary-text-color);
+}
+
+.button-menu :is(a, button):hover, .button-menu button:hover i {
+    background-color: var(--highlight-background-color);
+    color: var(--highlight-text-color) !important;
+}
+
+.code-actions {
+    max-width: 100%;
+    padding: 0 var(--padding) 0 var(--padding);
+
+    /* flex parent */
+    display: flex;
+}
+
+.action-button {
+    background-color: var(--primary-background-color);
+    border: none;
+    border-radius: 0;
+    color: var(--primary-text-color);
+    /* height: 30px;*/
+    width: 150px;
+}
+
+.action-button i, .action-button:hover i {
+    color: var(--primary-text-color) !important;
+}

packages/core/components/Modal/CodeSnippet/index.tsx

@@ -1,4 +1,5 @@
-import { IconButton, TooltipHost } from "@fluentui/react";
+import { ActionButton, IContextualMenuItem, IconButton, TooltipHost } from "@fluentui/react";
+import classNames from "classnames";
 import * as React from "react";
 import { useSelector } from "react-redux";
 import SyntaxHighlighter from "react-syntax-highlighter";
@@ -18,9 +19,19 @@ export default function CodeSnippet({ onDismiss }: ModalProps) {
     const pythonSnippet = useSelector(interaction.selectors.getPythonSnippet);
     const code = pythonSnippet?.code;
     const setup = pythonSnippet?.setup;
+    const languageOptions: IContextualMenuItem[] = [
+        {
+            key: "python",
+            text: "Python (pandas)",
+            onClick() {
+                setLanguage("Python (pandas)");
+            },
+        },
+    ];
 
     const [isSetupCopied, setSetupCopied] = React.useState(false);
     const [isCodeCopied, setCodeCopied] = React.useState(false);
+    const [language, setLanguage] = React.useState(languageOptions[0].text);
 
     const onCopySetup = () => {
         setup && navigator.clipboard.writeText(setup);
@@ -44,6 +55,19 @@ export default function CodeSnippet({ onDismiss }: ModalProps) {
 
     const body = (
         <>
+            <div className={styles.header}>
+                <h4>Language</h4>
+                <div className={styles.codeActions}>
+                    <ActionButton
+                        className={classNames(styles.actionButton, styles.copyButton)}
+                        menuProps={{
+                            className: styles.buttonMenu,
+                            items: languageOptions,
+                        }}
+                        text={language}
+                    />
+                </div>
+            </div>
             <div className={styles.header}>
                 <h4>Setup</h4>
                 <TooltipHost content={isSetupCopied ? "Copied to clipboard!" : undefined}>
@@ -75,6 +99,10 @@ export default function CodeSnippet({ onDismiss }: ModalProps) {
             </div>
             <SyntaxHighlighter
                 className={styles.code}
+                lineProps={{ style: { wordBreak: "break-all", whiteSpace: "pre-wrap" } }}
+                wrapLines
+                showLineNumbers={false}
+                showInlineLineNumbers={false}
                 language="python"
                 onMouseDown={stopPropagationHandler}
                 onMouseMove={stopPropagationHandler}

packages/core/entity/FileExplorerURL/index.ts

@@ -157,4 +157,79 @@ export default class FileExplorerURL {
             sortColumn,
         };
     }
+
+    public static convertToPython(urlComponents: Partial<FileExplorerURLComponents>) {
+        const collectionString = this.convertCollectionToPython(urlComponents?.collection);
+
+        const groupByQueryString =
+            urlComponents.hierarchy
+                ?.map((annotation) => this.convertGroupByToPython(annotation))
+                .join("") || "";
+
+        // Group filters by name and use OR to concatenate same filter values
+        const filterGroups = new Map();
+        urlComponents.filters?.forEach((filter) => {
+            const pythonQueryString = filterGroups.get(filter.name);
+            if (!pythonQueryString) {
+                filterGroups.set(filter.name, this.convertFilterToPython(filter));
+            } else {
+                filterGroups.set(
+                    filter.name,
+                    pythonQueryString.concat(` | ${this.convertFilterToPython(filter)}`)
+                );
+            }
+        });
+
+        // Chain the filters together
+        let filterQueryString = "";
+        filterGroups.forEach((value) => {
+            filterQueryString = filterQueryString.concat(`.query('${value}')`);
+        });
+
+        const sortQueryString = urlComponents.sortColumn
+            ? this.convertSortToPython(urlComponents.sortColumn)
+            : "";
+        // const fuzzy = [] // TO DO: support fuzzy filtering
+
+        const hasQueryElements = groupByQueryString || filterQueryString || sortQueryString;
+        const imports = "import pandas\n";
+        const comment = hasQueryElements ? "#Query on dataframe df" : "#No options selected";
+        const fullQueryString = `${comment}${
+            hasQueryElements && `\ndf${groupByQueryString}${filterQueryString}${sortQueryString}`
+        }`;
+        return `${imports}${collectionString}${fullQueryString}`;
+    }
+
+    private static convertSortToPython(sortColumn: FileSort) {
+        return `.sort_values(by='${sortColumn.annotationName}', ascending=${
+            sortColumn.order == "ASC" ? "True" : "False"
+        })`;
+    }
+
+    private static convertGroupByToPython(annotation: string) {
+        return `.groupby('${annotation}', group_keys=True).apply(lambda x: x)`;
+    }
+
+    private static convertFilterToPython(filter: FileFilter) {
+        // TO DO: Support querying non-string types
+        if (filter.value.includes("RANGE")) {
+            return;
+            //     let begin, end;
+            //     return `\`${filter.name}\`>="${begin}"&\`${filter.name}\`<"${end}"`
+        }
+        return `\`${filter.name}\`=="${filter.value}"`;
+    }
+
+    private static convertCollectionToPython(collection: Collection | undefined) {
+        if (collection?.uri) {
+            const comment = "#Convert current datasource file to a pandas dataframe";
+            const extension = collection.uri.substring(collection.uri.lastIndexOf(".") + 1);
+            // Currently suggest setting all fields to strings; otherwise pandas assumes type conversions
+            // TO DO: Address different non-string type conversions
+            const code = `df = pandas.read_${extension}('${collection.uri}').astype('str')`;
+            // This only works if we assume that the file types will only be csv, parquet or json
+            return `${comment}\n${code}\n\n`;
+        }
+        return "";
+    }
 }

packages/core/state/interaction/selectors.ts

@@ -1,7 +1,7 @@
 import { createSelector } from "reselect";
 
 import { State } from "../";
-import { getCollection } from "../selection/selectors";
+import { getCollection, getPythonConversion } from "../selection/selectors";
 import { AnnotationService, FileService, HttpServiceBase } from "../../services";
 import DatasetService, { PythonicDataAccessSnippet } from "../../services/DatasetService";
 import DatabaseAnnotationService from "../../services/AnnotationService/DatabaseAnnotationService";
@@ -32,12 +32,11 @@ export const getUserSelectedApplications = (state: State) =>
 export const getVisibleModal = (state: State) => state.interaction.visibleModal;
 
 // COMPOSED SELECTORS
-// TODO: Implement PythonicDataAccessSnippet
 export const getPythonSnippet = createSelector(
-    [],
-    (): PythonicDataAccessSnippet => {
+    [getPythonConversion],
+    (pythonQuery): PythonicDataAccessSnippet => {
         const setup = "pip install pandas";
-        const code = "TODO";
+        const code = `${pythonQuery}`;
 
         return { setup, code };
     }

packages/core/state/selection/selectors.ts

@@ -52,6 +52,25 @@ export const getEncodedFileExplorerUrl = createSelector(
     }
 );
 
+export const getPythonConversion = createSelector(
+    [getAnnotationHierarchy, getFileFilters, getOpenFileFolders, getSortColumn, getCollection],
+    (
+        hierarchy: string[],
+        filters: FileFilter[],
+        openFolders: FileFolder[],
+        sortColumn?: FileSort,
+        collection?: Dataset
+    ) => {
+        return FileExplorerURL.convertToPython({
+            hierarchy,
+            filters,
+            openFolders,
+            sortColumn,
+            collection,
+        });
+    }
+);
+
 export const getGroupedByFilterName = createSelector(
     [getFileFilters, getAnnotations],
     (globalFilters: FileFilter[], annotations: Annotation[]) => {