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https://github.com/franzdiebold/ng-google-sheets-db-library

Use Google Sheets as your (read-only) backend for your Angular app!
https://github.com/franzdiebold/ng-google-sheets-db-library

angular angular-library angular-schematics database github-actions google-sheets google-spreadsheet ng-add

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Use Google Sheets as your (read-only) backend for your Angular app!

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ng-google-sheets-db logo

# ng-google-sheets-db - Angular Google Sheets DB

[![Test, lint, build and deploy](https://github.com/FranzDiebold/ng-google-sheets-db-library/workflows/Test,%20lint,%20build%20and%20deploy/badge.svg)](https://github.com/FranzDiebold/ng-google-sheets-db-library/actions)
[![demo: app](https://img.shields.io/badge/demo-app-2ca467.svg)](https://franzdiebold.github.io/ng-google-sheets-db-library/)
[![demo: StackBlitz](https://img.shields.io/badge/demo-StackBlitz-1389fd.svg)](https://stackblitz.com/edit/ng-google-sheets-db-demo)
[![Angular: v10](https://img.shields.io/badge/Angular-v10-DD0031.svg)](./projects/ng-google-sheets-db/package.json)
[![npm](https://img.shields.io/npm/v/ng-google-sheets-db.svg)](https://www.npmjs.com/package/ng-google-sheets-db)
[![npm](https://img.shields.io/npm/dm/ng-google-sheets-db.svg)](https://www.npmjs.com/package/ng-google-sheets-db)
[![license: MIT](https://img.shields.io/badge/license-MIT-brightgreen.svg)](./LICENSE)

Use [Google Sheets](https://en.wikipedia.org/wiki/Google_Sheets) as your (read-only) backend for your Angular app!

[![Google Sheets Table](./images/google-sheets-table.png)](https://docs.google.com/spreadsheets/d/1gSc_7WCmt-HuSLX01-Ev58VsiFuhbpYVo8krbPCvvqA)

```typescript
const attributesMapping = {
id: "ID",
name: "Name",
email: "Email Address",
contact: {
_prefix: "Contact ",
street: "Street",
streetNumber: "Street Number",
zip: "ZIP",
city: "City",
},
skills: {
_prefix: "Skill ",
_listField: true,
},
};
```

```ts
googleSheetsDbService
.get(
"1gSc_7WCmt-HuSLX01-Ev58VsiFuhbpYVo8krbPCvvqA",
"Characters",
attributesMapping
)
.subscribe((characters: object[]) => {
// Use the characters here
});
```

## Installation

```bash
ng add ng-google-sheets-db
```

or

```bash
npm install ng-google-sheets-db
```

## Usage

### Google Sheets

1. Create a [Google Sheet](https://docs.google.com/spreadsheets):
- The first row **must** be the header.
- The following rows are your entries, one entry per row.
- You may have an _active_ column, with which you can enable or disable rows/entries.
- A Google Sheets demo spreadsheet is available [here](https://docs.google.com/spreadsheets/d/1gSc_7WCmt-HuSLX01-Ev58VsiFuhbpYVo8krbPCvvqA).
2. Share your sheet:
- [File] → [Share] → On the bottom of the modal at "Get Link" click [Change to anyone with the link] to be "Viewer".
- Get the _Spreadsheet ID_ (i.e. `1gSc_7WCmt-HuSLX01-Ev58VsiFuhbpYVo8krbPCvvqA`): It is part of the Google spreadsheet URL.
- Get the _Sheet Name_: The name of the worksheet can be found at the bottom of your Google spreadsheet.
3. Optional: It may be a good idea to enable [2-Step Verification](https://www.google.com/landing/2step/) for your Google account, if you have not done it yet :wink:.

### Google Cloud Platform (GCP)

A good overview guide is the [Get started as a Workspace developer](https://developers.google.com/workspace/guides/getstarted-overview).

1. Create a new project in the [Google Cloud Console](https://console.cloud.google.com/).
2. Enable Google Sheets API: [APIs & Services] → [Enable APIs and Services] → Search for "Google Sheets API" → [ENABLE].
3. Create an _API key_: [APIs & Services] → [Credentials] → [+ CREATE CREDENTIALS] → [API key] → [RESTRICT KEY] → In "Application restrictions" choose "HTTP referrers (web sites)" with "Website restrictions" and in "API restrictions" choose "Restrict key" and select "Google Sheets API" → [SAVE].
4. Get the generated API key.

### Angular

Add `GoogleSheetsDbService` to your app's module as a provider and Angular's `HttpClientModule` to the imports:

```typescript
import { HttpClientModule } from '@angular/common/http';

import { API_KEY, GoogleSheetsDbService } from 'ng-google-sheets-db';

@NgModule({
...
imports: [
HttpClientModule,
...
],
providers: [
{
provide: API_KEY,
useValue: ,
},
GoogleSheetsDbService
],
...
})
export class AppModule { }
```

Import and inject into your component's constructor:

```typescript
import { GoogleSheetsDbService } from 'ng-google-sheets-db';

@Component({
...
})
export class YourComponent implements OnInit {
characters$: Observable;

constructor(private googleSheetsDbService: GoogleSheetsDbService) { }

ngOnInit(): void {
this.characters$ = this.googleSheetsDbService.get('1gSc_7WCmt-HuSLX01-Ev58VsiFuhbpYVo8krbPCvvqA', "Characters", characterAttributesMapping);
}
```

### Attributes Mapping

The `attributesMapping` maps the Google spreadsheet columns to to your outcome object.

```typescript
const attributesMapping = {
id: "ID",
name: "Name",
email: "Email Address",
contact: {
_prefix: "Contact ",
street: "Street",
streetNumber: "Street Number",
zip: "ZIP",
city: "City",
},
skills: {
_prefix: "Skill ",
_listField: true,
},
};
```

For example, the Google spreadsheet column _Email Address_ is mapped to the outcome object attribute `email`.

#### Nested objects

`contact` is an example of a nested object. You may define a `_prefix` as a prefix for all columns of the nested object. Please note that the `_prefix` may need a trailing whitespace.

#### Lists

`skills` is an example of a list. You need to set `_listField` and a `_prefix` for all columns of the list. In this example, all columns starting with _Skill _ and an increasing number are part of the list, i.e. _Skill 1_, _Skill 2_, etc. Please note that the `_prefix` may need a trailing whitespace.

## Methods

### get(spreadsheetId: string, worksheetName: string, attributesMapping: object | string[]): Observable

```typescript
const allCharacters$: Observable =
googleSheetsDbService.get(
"1gSc_7WCmt-HuSLX01-Ev58VsiFuhbpYVo8krbPCvvqA",
"Characters",
attributesMapping
);
```

Get all rows from the Google spreadsheet as an `Observable` of objects or a given type as type variable `T`.

### getActive(spreadsheetId: string, worksheetName: string, attributesMapping: object | string[], isActiveColumnName: string = 'is_active', activeValues: string[] | string = null): Observable

```typescript
const activeCharacters$: Observable =
googleSheetsDbService.getActive(
"1gSc_7WCmt-HuSLX01-Ev58VsiFuhbpYVo8krbPCvvqA",
"Characters",
attributesMapping,
"Active"
);
```

Get "active" rows from the Google spreadsheet as an `Observable` of objects or a given type as type variable `T`. You may have an _active_ column with name `isActiveColumnName`, with which you can enable or disable rows/entries.
"Active" rows have the value `true`, `1` or `yes`. You may also define your own `activeValues`.

## Demo Application

Want to see an example of how to use `ng-google-sheets-db`? Check out the demo application in [projects/demo](./projects/demo) or on [StackBlitz](https://stackblitz.com/edit/ng-google-sheets-db-demo).

## License

[MIT](./LICENSE)