108 lines
1.8 KiB
Go
108 lines
1.8 KiB
Go
package config
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import (
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"fmt"
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"strconv"
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"sync"
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"github.com/diamondburned/cchat"
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"github.com/pkg/errors"
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)
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type customType interface {
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Marshal() string
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Unmarshal(string) error
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}
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type config struct {
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Name string
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Value interface{}
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}
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func (c config) Marshal(dst map[string]string) error {
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switch v := c.Value.(type) {
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case bool:
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dst[c.Name] = strconv.FormatBool(v)
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case string:
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dst[c.Name] = v
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default:
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return cchat.ErrInvalidConfigAtField{
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Key: c.Name,
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Err: fmt.Errorf("unknown type %T", c.Value),
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}
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}
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return nil
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}
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func (c *config) Unmarshal(src map[string]string) (err error) {
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strVal, ok := src[c.Name]
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if !ok {
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return cchat.ErrInvalidConfigAtField{
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Key: c.Name, Err: errors.New("missing field"),
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}
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}
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switch v := c.Value.(type) {
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case bool:
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c.Value, err = strconv.ParseBool(strVal)
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case string:
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c.Value = strVal
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case customType:
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err = v.Unmarshal(strVal)
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c.Value = v
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default:
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err = fmt.Errorf("unknown type %T", c.Value)
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}
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if err != nil {
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return cchat.ErrInvalidConfigAtField{
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Key: c.Name,
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Err: err,
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}
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}
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return nil
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}
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type registry struct {
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mutex sync.RWMutex
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configs []config
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}
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func (reg *registry) get(i int) interface{} {
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reg.mutex.RLock()
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defer reg.mutex.RUnlock()
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return reg.configs[i].Value
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}
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func (reg *registry) Configuration() (map[string]string, error) {
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reg.mutex.RLock()
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defer reg.mutex.RUnlock()
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var configMap = map[string]string{}
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for _, config := range reg.configs {
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if err := config.Marshal(configMap); err != nil {
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return nil, err
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}
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}
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return configMap, nil
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}
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func (reg *registry) SetConfiguration(cfgMap map[string]string) error {
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reg.mutex.Lock()
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defer reg.mutex.Unlock()
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for i := range reg.configs {
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// reference the config inside the slice
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if err := reg.configs[i].Unmarshal(cfgMap); err != nil {
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return err
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}
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}
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return nil
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}
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