package appconfig

import (
	"encoding/json"
	"strings"
	"testing"
)

func TestKeyIsAccountScoped(t *testing.T) {
	got := Key("bab", "keymail")
	want := "apps/bab/keymail/config.json"
	if got != want {
		t.Fatalf("Key(bab, keymail) = %q, want %q", got, want)
	}
}

func TestValidVarName(t *testing.T) {
	valid := []string{"LOG_LEVEL", "_FOO", "A", "SES_SECRET_2", "lower_case"}
	invalid := []string{"", "1FOO", "has-hyphen", "has space", "has=equals"}
	for _, k := range valid {
		if !ValidVarName(k) {
			t.Errorf("ValidVarName(%q) = false, want true", k)
		}
	}
	for _, k := range invalid {
		if ValidVarName(k) {
			t.Errorf("ValidVarName(%q) = true, want false", k)
		}
	}
}

// The swap policy (zero-downtime spec §4.1) is additive to schema 1: a
// manifest written before it parses with zero values, and a manifest with no
// policy marshals with no new keys, byte for byte as before.
func TestSwapPolicyIsAdditive(t *testing.T) {
	var old Manifest
	if err := json.Unmarshal([]byte(`{"schema":1,"app":"blog","vars":{}}`), &old); err != nil {
		t.Fatal(err)
	}
	if old.Swap != "" || old.SwapConcurrency != 0 {
		t.Fatalf("old manifest parsed as %q/%d", old.Swap, old.SwapConcurrency)
	}
	raw, err := json.Marshal(Manifest{Schema: 1, App: "blog", Vars: map[string]Var{}})
	if err != nil {
		t.Fatal(err)
	}
	if strings.Contains(string(raw), "swap") {
		t.Fatalf("a manifest with no policy marshals %s", raw)
	}
	var m Manifest
	if err := json.Unmarshal([]byte(`{"schema":1,"app":"blog","vars":{},"swap":"hold","swap_concurrency":3}`), &m); err != nil {
		t.Fatal(err)
	}
	if m.Swap != SwapHold || m.SwapConcurrency != 3 {
		t.Fatalf("parsed %q/%d", m.Swap, m.SwapConcurrency)
	}
	for v, want := range map[string]bool{"": true, "overlap": true, "hold": true, "Hold": false, "stop": false} {
		if ValidSwap(v) != want {
			t.Errorf("ValidSwap(%q) = %v", v, !want)
		}
	}
	for n, want := range map[int]bool{-1: false, 0: true, 1: true, 64: true} {
		if ValidSwapConcurrency(n) != want {
			t.Errorf("ValidSwapConcurrency(%d) = %v", n, !want)
		}
	}
}