1. Create Google Cloud Project, and active Speech API
2. Create service account, and download json config file, placing it in same directory as executable
3. run -> export GOOGLE_APPLICATION_CREDENTIALS=googleconfig.json
4. or export GOOGLE_APPLICATION_CREDENTIALS=/opt/vmspeech/googleconfig.json

TODOs

1. Integrate asterisk/FreePBX mailmcd to call built app, w/ cli Flags
2. locate logic for asterisk's temp WAV storage and pass to cli call
3. delete WAV file after transmission

build on mac for linux env GOOS=linux GOARCH=amd64 go build

sample mailmcd trigger

/opt/vmspeech/./main-linux --callerID=${VM_CALLERID} --extension=${VM_MAILBOX}