package privacy

import (
	"strings"
	"testing"
)

// Fixtures use "acme.ru" as a stand-in customer domain. The RFC 2606
// "example.*" names are on the allowlist (they are the sanitization target),
// so they cannot double as the customer placeholder in detection tests.
func TestScan_DetectsAndClassifies(t *testing.T) {
	files := []File{
		{Path: "onekeylog/configuration/conf/resolv.conf", Content: []byte(
			"domain corp.acme.ru\nsearch corp.acme.ru\nnameserver 10.10.0.1\n")},
		{Path: "onekeylog/configuration/conf/activedir.conf", Content: []byte(
			"racdomain=corp.acme.ru\nadfilterdc1=10.10.0.5\nrolegroup1name=cab-gr-CI00363277-x86bmc\n")},
		{Path: "onekeylog/configuration/conf/BMC1/misccfg.ini", Content: []byte(
			"TimeZone=Europe/Moscow\nSELTimeUTCOffset=180\n")},
		{Path: "onekeylog/log/audit.log", Content: []byte(
			"2026-08-24T11:47:34+03:00 login admin from ntp01.acme.ru ok\n" +
				"contact ops@acme.ru for access\n" +
				"outbound 45.32.10.7 established\n" +
				"internal 192.168.31.4 and 10.1.2.3 and doc 203.0.113.9\n")},
		{Path: "onekeylog/runningdata/rundatainfo.log", Content: []byte(
			"Mon Aug 24 11:58:48 MSK 2026\n")},
		// Vendor factory template - must be skipped entirely.
		{Path: "onekeylog/configuration/conf/ntp_auto.conf", Content: []byte(
			"server ntp.should-not-match.ru\n")},
		{Path: "onekeylog/bin/blob", Content: []byte{0x00, 0x01, 0x02, 0xff}},
	}

	rep := Scan(files)
	if rep == nil {
		t.Fatal("nil report")
	}
	if rep.FilesScanned != 5 {
		t.Fatalf("FilesScanned = %d, want 5 (binary + template skipped)", rep.FilesScanned)
	}

	has := func(cat, match string) bool {
		for _, f := range rep.Findings {
			if f.Category == cat && f.Match == match {
				return true
			}
		}
		return false
	}
	mustHave := []struct{ cat, match string }{
		{catResolv, "corp.acme.ru"},
		{catADLDAP, "corp.acme.ru"},
		{catADLDAP, "cab-gr-CI00363277-x86bmc"},
		{catTimezone, "Europe/Moscow"},
		{catTimezone, "180"},
		{catDomain, "ntp01.acme.ru"},
		{catEmail, "ops@acme.ru"},
		{catPublicIP, "45.32.10.7"},
		{catTimezone, "MSK"},
	}
	for _, w := range mustHave {
		if !has(w.cat, w.match) {
			t.Errorf("missing finding %s / %q", w.cat, w.match)
		}
	}

	mustNotHave := []string{"192.168.31.4", "10.1.2.3", "203.0.113.9", "ntp.should-not-match.ru"}
	for _, f := range rep.Findings {
		for _, bad := range mustNotHave {
			if f.Match == bad {
				t.Errorf("unexpected finding for %q (%s)", bad, f.Category)
			}
		}
	}

	if len(rep.Customers) == 0 || rep.Customers[0].Domain != "acme.ru" {
		t.Fatalf("customer guess = %+v, want acme.ru first", rep.Customers)
	}
	if rep.Customers[0].Confidence != "high" {
		t.Errorf("confidence = %s, want high", rep.Customers[0].Confidence)
	}
}

func TestScan_NothingToScan(t *testing.T) {
	if Scan(nil) != nil {
		t.Fatal("want nil for no files")
	}
	if Scan([]File{{Path: "x", Content: []byte{0}}}) != nil {
		t.Fatal("want nil when only binary files")
	}
}

func TestScan_Dedupe(t *testing.T) {
	rep := Scan([]File{{Path: "a.log", Content: []byte(
		"host is srv-prod.acme.net\nhost is srv-prod.acme.net again\n")}})
	if rep == nil {
		t.Fatal("nil report")
	}
	n := 0
	for _, f := range rep.Findings {
		if f.Category == catDomain && f.Match == "srv-prod.acme.net" {
			n++
		}
	}
	if n != 1 {
		t.Fatalf("domain finding counted %d times, want 1", n)
	}
}

func TestScan_AllowlistedDomainNotFlagged(t *testing.T) {
	rep := Scan([]File{{Path: "ntp.conf", Content: []byte(
		"server 0.pool.ntp.org\nserver time.nist.gov\ncontact admin@example.com\n")}})
	if rep != nil && len(rep.Findings) > 0 {
		t.Fatalf("allowlisted infra flagged: %+v", rep.Findings)
	}
}

func TestScan_NvidiaBugReportNoise(t *testing.T) {
	// dmidecode + dmesg boilerplate that must not be flagged.
	rep := Scan([]File{{Path: "nvidia-bug-report.log", Content: []byte(
		"driver bug via the NVIDIA Linux forum (see forums.developer.nvidia.com)\n" +
			"or by sending email to 'linux-bugs@nvidia.com'.\n" +
			"		Asset Tag: Base Board Asset Tag\n" +
			"		P1-DIMMA1_AssetTag (Date:24/31)\n" +
			"		ME FW Version\n		18:6.1.4.5\n" +
			"[    8.078174] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>\n")}})
	if rep != nil && len(rep.Findings) > 0 {
		t.Fatalf("nvidia boilerplate flagged: %+v", rep.Findings)
	}
	if rep != nil && len(rep.Customers) > 0 {
		t.Fatalf("nvidia boilerplate produced a customer guess: %+v", rep.Customers)
	}
}

func TestScan_RealResolvStillCaughtInNoisyFile(t *testing.T) {
	rep := Scan([]File{{Path: "nvidia-bug-report.log", Content: []byte(
		"[    8.078174] pps_core: <giometti@linux.it>\n" +
			"--- /etc/resolv.conf ---\ndomain corp.acme.ru\nnameserver 10.0.0.1\n")}})
	if rep == nil {
		t.Fatal("nil report")
	}
	found := false
	for _, f := range rep.Findings {
		if f.Category == catResolv && f.Match == "corp.acme.ru" {
			found = true
		}
	}
	if !found {
		t.Fatalf("real resolv.conf leak missed: %+v", rep.Findings)
	}
	if len(rep.Customers) == 0 || rep.Customers[0].Domain != "acme.ru" {
		t.Fatalf("customer guess = %+v, want acme.ru", rep.Customers)
	}
}

func TestScan_OSConfigNoise(t *testing.T) {
	// Everything here is stock OS / BEE-SP / Redfish text - zero customer data.
	noise := strings.Join([]string{
		`Process: 3950 ExecStartPre=/usr/bin/nvidia-fabricmanager-start.sh --mode`,
		`echo "Usage: mountall.sh [start|stop]" >&2`,
		`. /lib/init/vars.sh`,
		`auth.backend.gssapi.store-creds = "disable"`,
		`server.network-backend = "writev"`,
		`ssl.ca-file = "/conf/server.pem"`,
		`# ALL EXCEPT in.fingerd: other.host.name, .other.domain`,
		`/lib/arm-linux-gnueabihf/libc.so.6`,
		`"@odata.id": "/redfish/v1/Systems/1"`,
		`X.Org X Server 1.21.1.7`,
		`ME FW Version 6.1.4.75`,
		`96.00.CF.00.03 VBIOS`,
		`#option dns 129.219.13.81`,
		`toolchain@v0.0.1-go1.25.0.linux-amd64/src/runtime/sema.go:9`,
		`serial-getty@ttyAMA0.service`,
		`Copyright (C) 2002-22, www.smartmontools.org`,
		`OpenIB.org BSD license (FreeBSD Variant)`,
	}, "\n")
	rep := Scan([]File{{Path: "onekeylog/log/sollog/SOLHostCapture.log", Content: []byte(noise)}})
	if rep != nil && len(rep.Findings) > 0 {
		t.Fatalf("OS config noise flagged: %+v", rep.Findings)
	}
}

func TestScan_ResolvNeedsDottedValue(t *testing.T) {
	rep := Scan([]File{{Path: "resolv.conf", Content: []byte(
		"domain 53\nsearch nameserver\ndomain corp.acme.ru\n")}})
	if rep == nil {
		t.Fatal("nil")
	}
	var got []string
	for _, f := range rep.Findings {
		if f.Category == catResolv {
			got = append(got, f.Match)
		}
	}
	if len(got) != 1 || got[0] != "corp.acme.ru" {
		t.Fatalf("resolv matches = %v, want [corp.acme.ru]", got)
	}
}

func TestSummary(t *testing.T) {
	rep := Scan([]File{{Path: "resolv.conf", Content: []byte("domain acme.ru\n")}})
	if rep.Summary.Total != len(rep.Findings) || rep.Summary.Total == 0 {
		t.Fatalf("summary total mismatch: %+v", rep.Summary)
	}
	if rep.Summary.High == 0 {
		t.Fatalf("expected a high finding, got %+v", rep.Summary)
	}
}