132 lines
2.6 KiB
Go
132 lines
2.6 KiB
Go
package provider
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import (
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"strings"
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"github.com/evcc-io/evcc/provider/javascript"
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"github.com/evcc-io/evcc/util"
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"github.com/robertkrimen/otto"
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)
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// Javascript implements Javascript request provider
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type Javascript struct {
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vm *otto.Otto
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script string
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}
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func init() {
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registry.Add("js", NewJavascriptProviderFromConfig)
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}
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// NewJavascriptProviderFromConfig creates a HTTP provider
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func NewJavascriptProviderFromConfig(other map[string]interface{}) (IntProvider, error) {
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var cc struct {
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VM string
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Script string
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}
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if err := util.DecodeOther(other, &cc); err != nil {
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return nil, err
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}
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vm := javascript.RegisteredVM(strings.ToLower(cc.VM))
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p := &Javascript{
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vm: vm,
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script: cc.Script,
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}
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return p, nil
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}
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// FloatGetter parses float from request
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func (p *Javascript) FloatGetter() func() (float64, error) {
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return func() (res float64, err error) {
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v, err := p.vm.Eval(p.script)
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if err == nil {
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res, err = v.ToFloat()
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}
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return res, err
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}
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}
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// IntGetter parses int64 from request
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func (p *Javascript) IntGetter() func() (int64, error) {
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return func() (res int64, err error) {
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v, err := p.vm.Eval(p.script)
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if err == nil {
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res, err = v.ToInteger()
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}
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return res, err
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}
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}
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// StringGetter sends string request
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func (p *Javascript) StringGetter() func() (string, error) {
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return func() (res string, err error) {
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v, err := p.vm.Eval(p.script)
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if err == nil {
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res, err = v.ToString()
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}
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return res, err
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}
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}
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// BoolGetter parses bool from request
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func (p *Javascript) BoolGetter() func() (bool, error) {
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return func() (res bool, err error) {
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v, err := p.vm.Eval(p.script)
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if err == nil {
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res, err = v.ToBoolean()
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}
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return res, err
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}
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}
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func (p *Javascript) setParam(param string, val interface{}) error {
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err := p.vm.Set(param, val)
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if err == nil {
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err = p.vm.Set("param", param)
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}
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if err == nil {
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err = p.vm.Set("val", val)
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}
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return err
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}
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// IntSetter sends int request
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func (p *Javascript) IntSetter(param string) func(int64) error {
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return func(val int64) error {
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err := p.setParam(param, val)
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if err == nil {
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_, err = p.vm.Eval(p.script)
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}
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return err
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}
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}
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// StringSetter sends string request
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func (p *Javascript) StringSetter(param string) func(string) error {
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return func(val string) error {
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err := p.setParam(param, val)
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if err == nil {
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_, err = p.vm.Eval(p.script)
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}
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return err
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}
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}
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// BoolSetter sends bool request
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func (p *Javascript) BoolSetter(param string) func(bool) error {
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return func(val bool) error {
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err := p.setParam(param, val)
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if err == nil {
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_, err = p.vm.Eval(p.script)
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}
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return err
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}
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}
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