89 lines
1.5 KiB
Go
89 lines
1.5 KiB
Go
package plugin
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"strconv"
|
|
|
|
"github.com/evcc-io/evcc/util"
|
|
)
|
|
|
|
type Case struct {
|
|
Case string
|
|
Set Config
|
|
}
|
|
|
|
type switchPlugin struct {
|
|
ctx context.Context
|
|
cases []Case
|
|
dflt *Config
|
|
}
|
|
|
|
func init() {
|
|
registry.AddCtx("switch", NewSwitchFromConfig)
|
|
}
|
|
|
|
// NewSwitchFromConfig creates switch provider
|
|
func NewSwitchFromConfig(ctx context.Context, other map[string]any) (Plugin, error) {
|
|
var cc struct {
|
|
Switch []Case
|
|
Default *Config
|
|
}
|
|
|
|
if err := util.DecodeOther(other, &cc); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
cases := make(map[string]struct{})
|
|
for _, c := range cc.Switch {
|
|
if _, ok := cases[c.Case]; ok {
|
|
return nil, fmt.Errorf("switch: duplicate case: %s", c.Case)
|
|
}
|
|
cases[c.Case] = struct{}{}
|
|
}
|
|
|
|
o := &switchPlugin{
|
|
ctx: ctx,
|
|
cases: cc.Switch,
|
|
dflt: cc.Default,
|
|
}
|
|
|
|
return o, nil
|
|
}
|
|
|
|
var _ IntSetter = (*switchPlugin)(nil)
|
|
|
|
func (o *switchPlugin) IntSetter(param string) (func(int64) error, error) {
|
|
set := make([]func(int64) error, 0, len(o.cases))
|
|
for _, cc := range o.cases {
|
|
s, err := cc.Set.IntSetter(o.ctx, param)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
set = append(set, s)
|
|
}
|
|
|
|
dflt, err := o.dflt.IntSetter(o.ctx, param)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return func(val int64) error {
|
|
for i, s := range o.cases {
|
|
ival, err := strconv.ParseInt(s.Case, 10, 64)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if ival == val {
|
|
return set[i](val)
|
|
}
|
|
}
|
|
|
|
if dflt != nil {
|
|
return dflt(val)
|
|
}
|
|
|
|
return fmt.Errorf("switch: value not found: %d", val)
|
|
}, nil
|
|
}
|