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package ui
import (
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/ethutil"
)
func fromHex(s string) []byte {
if len(s) > 1 {
if s[0:2] == "0x" {
s = s[2:]
}
return ethutil.Hex2Bytes(s)
}
return nil
}
func NewFilterFromMap(object map[string]interface{}, eth core.Backend) *core.Filter {
filter := core.NewFilter(eth)
if object["earliest"] != nil {
val := ethutil.NewValue(object["earliest"])
filter.SetEarliestBlock(val.Int())
}
if object["latest"] != nil {
val := ethutil.NewValue(object["latest"])
filter.SetLatestBlock(val.Int())
}
if object["address"] != nil {
val := ethutil.NewValue(object["address"])
filter.SetAddress(fromHex(val.Str()))
}
if object["max"] != nil {
val := ethutil.NewValue(object["max"])
filter.SetMax(int(val.Uint()))
}
if object["skip"] != nil {
val := ethutil.NewValue(object["skip"])
filter.SetSkip(int(val.Uint()))
}
if object["topics"] != nil {
filter.SetTopics(MakeTopics(object["topics"]))
}
return filter
}
// Conversion methodn
func mapToAccountChange(m map[string]interface{}) (d core.AccountChange) {
if str, ok := m["id"].(string); ok {
d.Address = fromHex(str)
}
if str, ok := m["at"].(string); ok {
d.StateAddress = fromHex(str)
}
return
}
// data can come in in the following formats:
// ["aabbccdd", {id: "ccddee", at: "11223344"}], "aabbcc", {id: "ccddee", at: "1122"}
func MakeTopics(v interface{}) (d [][]byte) {
if str, ok := v.(string); ok {
d = append(d, fromHex(str))
} else if slice, ok := v.([]string); ok {
for _, item := range slice {
d = append(d, fromHex(item))
}
}
return
}
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