51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
package cli
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import (
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"context"
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"os"
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"os/signal"
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"path/filepath"
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"github.com/FAU-CDI/wisski-distillery/internal/bootstrap"
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"github.com/FAU-CDI/wisski-distillery/pkg/environment"
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)
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// Params are used to initialize the excutable.
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type Params struct {
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ConfigPath string // ConfigPath is the path to the configuration file for the distillery
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Context context.Context // Context for the distillery
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}
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// ParamsFromEnv creates a new set of parameters from the environment.
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// Uses [ReadBaseDirectory] or falls back to [BaseDirectoryDefault].
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func ParamsFromEnv() (params Params, err error) {
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// try to read the base directory!
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value, err := ReadBaseDirectory(new(environment.Native)) // TODO: Are we sure about the native environment here?
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switch {
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case environment.IsNotExist(err):
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params.ConfigPath = bootstrap.BaseDirectoryDefault
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case err == nil:
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params.ConfigPath = value
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default:
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return params, err
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}
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// and add the configuration file name to it!
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params.ConfigPath = filepath.Join(params.ConfigPath, bootstrap.ConfigFile)
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// generate a new context
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ctx, cancel := context.WithCancel(context.Background())
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params.Context = ctx
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// cancel the context on an interrupt
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c := make(chan os.Signal, 1)
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signal.Notify(c, os.Interrupt)
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go func() {
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<-c
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cancel()
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}()
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// and return the params!
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return params, nil
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}
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