For question two, you can use the local_file resource in Terraform:

output "openai_api_type" {
value = module.openai.api_type
}

output "openai_api_base" {
value = module.openai.api_base
}

output "openai_api_version" {
value = module.openai.api_version
}

output "openai_api_key" {
value = module.openai.api_key
}

output "engine" {
value = module.openai.engine
}

resource "local_file" "output_json" {
content = jsonencode({
openai_api_type = module.openai.api_type,
openai_api_base = module.openai.api_base,
openai_api_version = module.openai.api_version,
openai_api_key = module.openai.api_key,
engine = module.openai.engine
})
filename = "${path.module}/output.json"
}