package file

import (
	"testing"

	"github.com/coredns/coredns/plugin/test"

	"github.com/mholt/caddy"
)

func TestFileParse(t *testing.T) {
	zoneFileName1, rm, err := test.TempFile(".", dbMiekNL)
	if err != nil {
		t.Fatal(err)
	}
	defer rm()

	zoneFileName2, rm, err := test.TempFile(".", dbDnssexNLSigned)
	if err != nil {
		t.Fatal(err)
	}
	defer rm()

	tests := []struct {
		inputFileRules string
		shouldErr      bool
		expectedZones  Zones
	}{
		{
			`file ` + zoneFileName1 + ` miek.nl {
				transfer from 127.0.0.1
			}`,
			true,
			Zones{},
		},
		{
			`file`,
			true,
			Zones{},
		},
		{
			`file ` + zoneFileName1 + ` miek.nl.`,
			false,
			Zones{Names: []string{"miek.nl."}},
		},
		{
			`file ` + zoneFileName2 + ` dnssex.nl.`,
			false,
			Zones{Names: []string{"dnssex.nl."}},
		},
		{
			`file ` + zoneFileName2 + ` 10.0.0.0/8`,
			false,
			Zones{Names: []string{"10.in-addr.arpa."}},
		},
		{
			`file ` + zoneFileName1 + ` example.net. {
				upstream a
			}`,
			true,
			Zones{Names: []string{}},
		},
		{
			`file ` + zoneFileName1 + ` example.net. {
				no_rebloat
			}`,
			true,
			Zones{Names: []string{}},
		},
	}

	for i, test := range tests {
		c := caddy.NewTestController("dns", test.inputFileRules)
		actualZones, err := fileParse(c)

		if err == nil && test.shouldErr {
			t.Fatalf("Test %d expected errors, but got no error", i)
		} else if err != nil && !test.shouldErr {
			t.Fatalf("Test %d expected no errors, but got '%v'", i, err)
		} else {
			if len(actualZones.Names) != len(test.expectedZones.Names) {
				t.Fatalf("Test %d expected %v, got %v", i, test.expectedZones.Names, actualZones.Names)
			}
			for j, name := range test.expectedZones.Names {
				if actualZones.Names[j] != name {
					t.Fatalf("Test %d expected %v for %d th zone, got %v", i, name, j, actualZones.Names[j])
				}
			}
		}
	}
}
