102 lines
2.9 KiB
Go
102 lines
2.9 KiB
Go
package config
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import (
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"reflect"
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"time"
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"github.com/urfave/cli"
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"github.com/photoprism/photoprism/pkg/txt"
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)
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// ApplyCliContext applies the values of the cli context based on the "flag" annotations.
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func ApplyCliContext(c interface{}, ctx *cli.Context) error {
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v := reflect.ValueOf(c).Elem()
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// Iterate through all config fields.
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for i := 0; i < v.NumField(); i++ {
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fieldValue := v.Field(i)
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tagValue := v.Type().Field(i).Tag.Get("flag")
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// Assign value to field with "flag" tag.
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if tagValue != "" && tagValue != "-" {
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switch t := fieldValue.Interface().(type) {
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case time.Duration:
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var s string
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// Get duration string.
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if ctx.IsSet(tagValue) {
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s = ctx.String(tagValue)
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} else if ctx.GlobalIsSet(tagValue) || fieldValue.Interface().(time.Duration) == 0 {
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s = ctx.GlobalString(tagValue)
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}
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// Parse duration string.
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if s == "" {
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// Omit.
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} else if sec := txt.UInt(s); sec > 0 {
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fieldValue.Set(reflect.ValueOf(time.Duration(sec) * time.Second))
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} else if d, err := time.ParseDuration(s); err == nil {
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fieldValue.Set(reflect.ValueOf(d))
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}
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case float64:
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// Only if explicitly set or current value is empty (use default).
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if ctx.IsSet(tagValue) {
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f := ctx.Float64(tagValue)
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fieldValue.SetFloat(f)
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} else if ctx.GlobalIsSet(tagValue) || fieldValue.Float() == 0 {
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f := ctx.GlobalFloat64(tagValue)
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fieldValue.SetFloat(f)
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}
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case int, int64:
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// Only if explicitly set or current value is empty (use default).
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if ctx.IsSet(tagValue) {
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f := ctx.Int64(tagValue)
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fieldValue.SetInt(f)
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} else if ctx.GlobalIsSet(tagValue) || fieldValue.Int() == 0 {
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f := ctx.GlobalInt64(tagValue)
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fieldValue.SetInt(f)
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}
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case uint, uint64:
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// Only if explicitly set or current value is empty (use default).
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if ctx.IsSet(tagValue) {
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f := ctx.Uint64(tagValue)
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fieldValue.SetUint(f)
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} else if ctx.GlobalIsSet(tagValue) || fieldValue.Uint() == 0 {
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f := ctx.GlobalUint64(tagValue)
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fieldValue.SetUint(f)
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}
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case string:
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// Only if explicitly set or current value is empty (use default)
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if ctx.IsSet(tagValue) {
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f := ctx.String(tagValue)
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fieldValue.SetString(f)
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} else if ctx.GlobalIsSet(tagValue) || fieldValue.String() == "" {
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f := ctx.GlobalString(tagValue)
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fieldValue.SetString(f)
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}
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case []string:
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if ctx.IsSet(tagValue) {
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f := reflect.ValueOf(ctx.StringSlice(tagValue))
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fieldValue.Set(f)
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} else if ctx.GlobalIsSet(tagValue) || fieldValue.Len() == 0 {
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f := reflect.ValueOf(ctx.GlobalStringSlice(tagValue))
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fieldValue.Set(f)
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}
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case bool:
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if ctx.IsSet(tagValue) {
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f := ctx.Bool(tagValue)
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fieldValue.SetBool(f)
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} else if ctx.GlobalIsSet(tagValue) {
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f := ctx.GlobalBool(tagValue)
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fieldValue.SetBool(f)
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}
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default:
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log.Warnf("cannot assign value of type %s from cli flag %s", t, tagValue)
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}
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}
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}
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return nil
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}
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