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