Works sorta

godoor.go

@@ -1,6 +1,11 @@
 package main
 
-import "fmt"
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+)
 import "time"
 
 const wiegand_a = 17
@@ -8,12 +13,56 @@ const wiegand_b = 18
 const wiegand_bit_timeout = time.Millisecond * 8
 const solenoid = 21
 
+type card struct {
+	UidHash string `json:"uid_hash"`
+}
+
+type cardToken struct {
+	Token card `json:"token"`
+}
+
+type cardList struct {
+	AllowedUids []cardToken `json:"allowed_uids"`
+}
+
+type ValidUids map[string]bool // bool has no meaning
+
 func main() {
 
 	wiegand := WiegandSetup(wiegand_a, wiegand_b, wiegand_bit_timeout, solenoid)
 
-	//openDoor(solenoid_line)
-	go wiegand.cardRunner()
+	client := http.Client{}
+	req, err := http.NewRequest(http.MethodGet, "urlrul", nil)
+	if err != nil {
+		panic(err)
+	}
+	req.Header.Add("KEY", "keykey")
+	resp, err := client.Do(req)
+	if err != nil {
+		panic(err)
+	}
+	fmt.Printf("%v\n", resp)
+
+	var cl cardList
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		panic(err)
+	}
+
+	err = json.Unmarshal(body, &cl)
+	if err != nil {
+		panic(err)
+	}
+
+	validUids := make(ValidUids)
+	for i, val := range cl.AllowedUids {
+		fmt.Printf("%d: %+v\n", i, val.Token.UidHash)
+		validUids[val.Token.UidHash] = false
+	}
+
+	go wiegand.cardRunner(validUids)
+
 	fmt.Printf("Sleeping\n")
 
 	for {