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package service
import (
"encoding/json"
"strings"
"testing"
)
func TestUnwrapXrayTemplateConfig(t *testing.T) {
real := `{"log":{},"inbounds":[],"outbounds":[],"routing":{}}`
t.Run("passes through a clean config", func(t *testing.T) {
if got := UnwrapXrayTemplateConfig(real); got != real {
t.Fatalf("clean config was modified: %s", got)
}
})
t.Run("passes through invalid JSON unchanged", func(t *testing.T) {
in := "not json at all"
if got := UnwrapXrayTemplateConfig(in); got != in {
t.Fatalf("invalid input was modified: %s", got)
}
})
t.Run("unwraps one layer of response-shaped wrapper", func(t *testing.T) {
wrapper := `{"inboundTags":["tag"],"outboundTestUrl":"x","xraySetting":` + real + `}`
got := UnwrapXrayTemplateConfig(wrapper)
if !equalJSON(t, got, real) {
t.Fatalf("want %s, got %s", real, got)
}
})
t.Run("unwraps multiple stacked layers", func(t *testing.T) {
lvl1 := `{"xraySetting":` + real + `}`
lvl2 := `{"xraySetting":` + lvl1 + `}`
lvl3 := `{"xraySetting":` + lvl2 + `}`
got := UnwrapXrayTemplateConfig(lvl3)
if !equalJSON(t, got, real) {
t.Fatalf("want %s, got %s", real, got)
}
})
t.Run("handles an xraySetting stored as a JSON-encoded string", func(t *testing.T) {
encoded, _ := json.Marshal(real) // becomes a quoted string
wrapper := `{"xraySetting":` + string(encoded) + `}`
got := UnwrapXrayTemplateConfig(wrapper)
if !equalJSON(t, got, real) {
t.Fatalf("want %s, got %s", real, got)
}
})
t.Run("does not unwrap when top level already has real xray keys", func(t *testing.T) {
// Pathological but defensible: if a user's actual config somehow
// has both the real keys and an unrelated `xraySetting` key, we
// must not strip it.
in := `{"inbounds":[],"xraySetting":{"some":"thing"}}`
got := UnwrapXrayTemplateConfig(in)
if got != in {
t.Fatalf("should have left real config alone, got %s", got)
}
})
t.Run("stops at a reasonable depth", func(t *testing.T) {
// Build a deeper-than-maxDepth chain that ends at something
// non-wrapped, and confirm we end up at some valid JSON (we
// don't loop forever and we don't blow the stack).
s := real
for i := 0; i < 16; i++ {
s = `{"xraySetting":` + s + `}`
}
got := UnwrapXrayTemplateConfig(s)
if !strings.Contains(got, `"inbounds"`) && !strings.Contains(got, `"xraySetting"`) {
t.Fatalf("unexpected tail: %s", got)
}
})
}
func equalJSON(t *testing.T, a, b string) bool {
t.Helper()
var va, vb any
if err := json.Unmarshal([]byte(a), &va); err != nil {
return false
}
if err := json.Unmarshal([]byte(b), &vb); err != nil {
return false
}
ja, _ := json.Marshal(va)
jb, _ := json.Marshal(vb)
return string(ja) == string(jb)
}
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