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package gatewaykcp
import (
"cmp"
"fmt"
"os"
"slices"
"strconv"
"strings"
"time"
"sigs.k8s.io/yaml"
"github.com/johnandersen777/socialweb-computer-kcp/api/v1alpha1"
"github.com/johnandersen777/socialweb-computer-kcp/internal/app/compose"
appgateway "github.com/johnandersen777/socialweb-computer-kcp/internal/app/gateway"
"github.com/johnandersen777/socialweb-computer-kcp/internal/providermain"
)
const (
DefaultWebAppFront = "127.0.0.1:8788"
PortZeroWebAppFront = "127.0.0.1:0"
OptionGatewayAudience = "gateway-audience"
OptionKcpPublicHost = "kcp-public-host"
)
func ReadSpec(path string) (v1alpha1.GatewaySpec, error) {
var s v1alpha1.GatewaySpec
if path == "" {
return s, nil
}
b, err := os.ReadFile(path)
if err != nil {
return s, fmt.Errorf("gatewaykcp: the Gateway spec file: %w", err)
}
if err := yaml.UnmarshalStrict(b, &s); err != nil {
return s, fmt.Errorf("gatewaykcp: the Gateway spec file %s: %w", path, err)
}
return s, nil
}
func ClusterProviderEnv(c *v1alpha1.GatewayClusterProvider) map[string]string {
out := map[string]string{}
if c == nil {
return out
}
if c.ScaleHold != "" {
out[providermain.EnvScaleHold] = c.ScaleHold
}
if c.ScaleMaxNodes != 0 {
out[providermain.EnvScaleMaxNodes] = strconv.Itoa(int(c.ScaleMaxNodes))
}
if c.ScalePodsPerNode != 0 {
out[providermain.EnvScalePodsPerNode] = strconv.Itoa(int(c.ScalePodsPerNode))
}
return out
}
func ClusterProviderFromEnv(lookup func(string) (string, bool), have *v1alpha1.GatewayClusterProvider) (*v1alpha1.GatewayClusterProvider, error) {
out := v1alpha1.GatewayClusterProvider{}
if have != nil {
out = *have
}
get := func(k string) string {
v, _ := lookup(k)
return strings.TrimSpace(v)
}
if v := get(providermain.EnvScaleHold); v != "" && out.ScaleHold == "" {
if _, err := time.ParseDuration(v); err != nil {
return nil, fmt.Errorf("%s is not a duration: %w", providermain.EnvScaleHold, err)
}
out.ScaleHold = v
}
for _, f := range []struct {
env string
dst *int32
}{{providermain.EnvScaleMaxNodes, &out.ScaleMaxNodes}, {providermain.EnvScalePodsPerNode, &out.ScalePodsPerNode}} {
v := get(f.env)
if v == "" || *f.dst != 0 {
continue
}
n, err := strconv.ParseInt(v, 10, 32)
if err != nil || n < 1 {
return nil, fmt.Errorf("%s is %q, not a whole number of at least 1", f.env, v)
}
*f.dst = int32(n)
}
if out == (v1alpha1.GatewayClusterProvider{}) {
return nil, nil
}
return &out, nil
}
func hasOption(s v1alpha1.GatewaySpec, name string) bool {
return slices.ContainsFunc(s.Options, func(o v1alpha1.ApplicationOption) bool { return o.Name == name })
}
func Spec(s v1alpha1.GatewaySpec, profile string, environ []string) v1alpha1.GatewaySpec {
e := newEnv(environ)
s.Profile = profile
n := v1alpha1.MarketNetworkValue{}
if s.Network != nil {
n = *s.Network
}
if n.PLCDirectoryURL == "" {
n.PLCDirectoryURL = e.get("SOCIALWEB_GATEWAY_PLC_URL")
}
n.PLCDirectoryURL = cmp.Or(n.PLCDirectoryURL, DefaultPLC)
if n.IngressProxyHost == "" {
n.IngressProxyHost = e.get("SOCIALWEB_GATEWAY_INGRESS_PROXY_HOST")
}
n.IngressProxyHost = cmp.Or(n.IngressProxyHost, DefaultIngress)
s.Network = &n
if s.Ingress == nil && profile == appgateway.ProfileGatewayProd {
s.Ingress = compose.DefaultIngressConfig()
if n.IngressProxyHost != "" {
s.Ingress.Xrpc.IngressProxyHost = n.IngressProxyHost
}
}
if s.WebAppFront == "" {
s.WebAppFront = PortZeroWebAppFront
if profile == appgateway.ProfileGatewayProd {
s.WebAppFront = DefaultWebAppFront
}
}
if len(s.Identity.ApprovedAssociations) == 0 {
for did := range strings.SplitSeq(e.get("SOCIALWEB_GATEWAY_APPROVED_ASSOCIATIONS"), ",") {
if did = strings.TrimSpace(did); did != "" && !slices.Contains(s.Identity.ApprovedAssociations, did) {
s.Identity.ApprovedAssociations = append(s.Identity.ApprovedAssociations, did)
}
}
}
s.Options = slices.Clone(s.Options)
if !hasOption(s, OptionGatewayAudience) {
first, _, _ := strings.Cut(e.get("SOCIALWEB_GATEWAY_AUDIENCES"), ",")
if first = strings.TrimSpace(first); first == "" {
first = DefaultAudience
}
s.Options = append(s.Options, v1alpha1.ApplicationOption{Name: OptionGatewayAudience, Value: first})
}
if h := e.get("SOCIALWEB_GATEWAY_KCP_PUBLIC_HOST"); h != "" && !hasOption(s, OptionKcpPublicHost) {
s.Options = append(s.Options, v1alpha1.ApplicationOption{Name: OptionKcpPublicHost, Value: h})
}
return s
}
