platform: modularize api/gui, add docs-tests-web foundation, and refresh root config

selective-vpn-api/app/resolver/artifacts.go

@@ -0,0 +1,88 @@
+package resolver
+
+import "sort"
+
+type ResolverArtifacts struct {
+	IPs           []string
+	DirectIPs     []string
+	WildcardIPs   []string
+	IPMap         [][2]string
+	DirectIPMap   [][2]string
+	WildcardIPMap [][2]string
+}
+
+func BuildResolverArtifacts(resolved map[string][]string, staticLabels map[string][]string, isWildcardHost func(string) bool) ResolverArtifacts {
+	ipSetAll := map[string]struct{}{}
+	ipSetDirect := map[string]struct{}{}
+	ipSetWildcard := map[string]struct{}{}
+
+	ipMapAll := map[string]map[string]struct{}{}
+	ipMapDirect := map[string]map[string]struct{}{}
+	ipMapWildcard := map[string]map[string]struct{}{}
+
+	add := func(set map[string]struct{}, labels map[string]map[string]struct{}, ip, label string) {
+		if ip == "" {
+			return
+		}
+		set[ip] = struct{}{}
+		m := labels[ip]
+		if m == nil {
+			m = map[string]struct{}{}
+			labels[ip] = m
+		}
+		m[label] = struct{}{}
+	}
+
+	for host, ips := range resolved {
+		wildcardHost := false
+		if isWildcardHost != nil {
+			wildcardHost = isWildcardHost(host)
+		}
+		for _, ip := range ips {
+			add(ipSetAll, ipMapAll, ip, host)
+			if wildcardHost {
+				add(ipSetWildcard, ipMapWildcard, ip, host)
+			} else {
+				add(ipSetDirect, ipMapDirect, ip, host)
+			}
+		}
+	}
+	for ipEntry, labels := range staticLabels {
+		for _, lbl := range labels {
+			add(ipSetAll, ipMapAll, ipEntry, lbl)
+			add(ipSetDirect, ipMapDirect, ipEntry, lbl)
+		}
+	}
+
+	var out ResolverArtifacts
+
+	appendMapPairs := func(dst *[][2]string, labelsByIP map[string]map[string]struct{}) {
+		for ip := range labelsByIP {
+			labels := labelsByIP[ip]
+			for lbl := range labels {
+				*dst = append(*dst, [2]string{ip, lbl})
+			}
+		}
+		sort.Slice(*dst, func(i, j int) bool {
+			if (*dst)[i][0] == (*dst)[j][0] {
+				return (*dst)[i][1] < (*dst)[j][1]
+			}
+			return (*dst)[i][0] < (*dst)[j][0]
+		})
+	}
+	appendIPs := func(dst *[]string, set map[string]struct{}) {
+		for ip := range set {
+			*dst = append(*dst, ip)
+		}
+		sort.Strings(*dst)
+	}
+
+	appendMapPairs(&out.IPMap, ipMapAll)
+	appendMapPairs(&out.DirectIPMap, ipMapDirect)
+	appendMapPairs(&out.WildcardIPMap, ipMapWildcard)
+	appendIPs(&out.IPs, ipSetAll)
+	appendIPs(&out.DirectIPs, ipSetDirect)
+	appendIPs(&out.WildcardIPs, ipSetWildcard)
+
+	return out
+}