40 lines
784 B
Go
40 lines
784 B
Go
package app
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
)
|
|
|
|
type Options struct {
|
|
ConfigPath string
|
|
Stdout io.Writer
|
|
}
|
|
|
|
func Run(ctx context.Context, opts Options) error {
|
|
if err := ctx.Err(); err != nil {
|
|
return err
|
|
}
|
|
|
|
if opts.ConfigPath == "" {
|
|
return errors.New("config path is required")
|
|
}
|
|
|
|
if opts.Stdout == nil {
|
|
opts.Stdout = io.Discard
|
|
}
|
|
|
|
if _, err := os.Stat(opts.ConfigPath); err != nil {
|
|
if errors.Is(err, os.ErrNotExist) {
|
|
return fmt.Errorf("config file %q does not exist; copy config.example.yaml to config.yaml and fill credentials", opts.ConfigPath)
|
|
}
|
|
|
|
return fmt.Errorf("check config file %q: %w", opts.ConfigPath, err)
|
|
}
|
|
|
|
fmt.Fprintf(opts.Stdout, "overnight trading bot initialized with config %q\n", opts.ConfigPath)
|
|
return nil
|
|
}
|