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backend-transcription/README.md

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# backend-transcription
Beep backend handling transcription of bites to text via Google Cloud.
## Quickstart
```
go build && ./backend-transcription
```
## Environment Variables
Supply environment variables by either exporting them or editing ```.env```.
| ENV | Description | Default |
| ---- | ----------- | ------- |
| LISTEN | Host and port number to listen on | :8080 |
| NATS | Host and port of nats | nats://localhost:4222 |
| API_KEY | Google Cloud API key | Something that works. Probably |
## API
## Scan Bites
```
GET /conversation/:key/scan
```
Get a list of transcription start times within a conversation key and specified timespan.
#### URL Params
| Name | Type | Description |
| ---- | ---- | ----------- |
| key | String | Audio transcription's bite's conversation's ID. |
#### Querystring
| Name | Type | Description |
| ---- | ---- | ----------- |
| from | Epoch timestamp | Time to start scanning from |
| to | Epoch timestamp | Time to scan to |
#### Success (200 OK)
```
Content-Type: application/json
```
```
{
"previous": <Timestamp of transcription before <starts>>,
"starts": [Timestamp, Timestamp...],
"next": <Timestamp of transcription after <starts>>,
}
```
#### Errors
| Code | Description |
| ---- | ----------- |
| 400 | Malformed input (from/to not timestamp, key not alphanumeric). |
| 500 | NATs or protobuf serialisation encountered errors. |
---
### Get Bite
```
GET /conversation/:key/start/:start
```
Get a specific ```transcription```.
#### URL Params
| Name | Type | Description |
| ---- | ---- | ----------- |
| key | String | Audio transcription's conversation's ID. |
| start | Epoch timestamp | Time the audio transcription starts. |
#### Success (200 OK)
Plaintext transcription
#### Errors
| Code | Description |
| ---- | ----------- |
| 400 | start is not an uint/key is not an alphanumeric string/specified bite could not be found |
| 500 | NATs or protobuf serialisation encountered errors. |