graphql

GraphQL-MutateJobs.go

// MutateJobs is used to modify jobs based on a mutation request
// Available params are
// employeeid! -- the id of the employee, required
// jobid! -- job to modify, required
// start -- the date to set as start date
// end -- the date to set as end
func (gs *GopherService) MutateJobs(p graphql.ResolveParams) (interface{}, error) {
	employee, err := grabStringArgument("employeeid", p.Args, true)
	if err != nil {
		return nil, err
	}
	jobid, err := grabStringArgument("jobid", p.Args, true)
	if err != nil {
		return nil, err
	}
	start, err := grabStringArgument("start", p.Args, false)
	if err != nil {
		return nil, err
	}
	end, err := grabStringArgument("end", p.Args, false)
	if err != nil {
		return nil, err
	}

	// Get the job
	job, err := gs.jobs.GetJob(employee, jobid)
	if err != nil {
		return nil, err
	}
	// Modify start and end date if they are set
	if start != "" {
		job.Start = start
	}

	if end != "" {
		job.End = end
	}
	// Update with new values
	return gs.jobs.Update(job)
}

// grabStringArgument is used to grab a string argument
func grabStringArgument(k string, args map[string]interface{}, required bool) (string, error) {
	// first check presense of arg
	if value, ok := args[k]; ok {
		// check string datatype
		v, o := value.(string)
		if !o {
			return "", fmt.Errorf("%s is not a string value", k)
		}
		return v, nil
	}
	if required {
		return "", fmt.Errorf("missing argument %s", k)
	}
	return "", nil
}