package relay

import (
	"fmt"
	"strings"
	"testing"

	"github.com/rcourtman/pulse-go-rewrite/internal/unifiedresources"
)

func TestCanonicalActionOutcomeNotificationMatrix(t *testing.T) {
	executions := []unifiedresources.ActionExecutionStatus{unifiedresources.ActionExecutionNotRun, unifiedresources.ActionExecutionSucceeded, unifiedresources.ActionExecutionFailed, unifiedresources.ActionExecutionInconclusive}
	verificationClasses := map[unifiedresources.ActionVerificationStatus][]unifiedresources.ActionEvidenceClass{
		unifiedresources.ActionVerificationNotAttempted: {unifiedresources.ActionEvidenceNone},
		unifiedresources.ActionVerificationConfirmed:    {unifiedresources.ActionEvidenceAgentAttested, unifiedresources.ActionEvidenceIndependent},
		unifiedresources.ActionVerificationContradicted: {unifiedresources.ActionEvidenceAgentAttested, unifiedresources.ActionEvidenceIndependent},
		unifiedresources.ActionVerificationInconclusive: {unifiedresources.ActionEvidenceNone, unifiedresources.ActionEvidenceAgentAttested, unifiedresources.ActionEvidenceIndependent},
	}
	cases := 0
	for _, execution := range executions {
		for verification, classes := range verificationClasses {
			for _, class := range classes {
				cases++
				t.Run(fmt.Sprintf("%s/%s/%s", execution, verification, class), func(t *testing.T) {
					result := unifiedresources.ActionResultV2{Execution: unifiedresources.ActionExecutionTruth{Status: execution}, Verification: unifiedresources.ActionVerificationTruth{Status: verification, EvidenceClass: class}}
					got := NewCanonicalActionOutcomeNotification("finding-1", "Action", result)
					if !strings.Contains(got.Body, "Execution ") || !strings.Contains(got.Body, "verification ") {
						t.Fatalf("notification collapsed an axis: %#v", got)
					}
					if class == unifiedresources.ActionEvidenceAgentAttested && !strings.Contains(got.Body, "agent-attested") {
						t.Fatalf("agent evidence source omitted: %#v", got)
					}
					if class == unifiedresources.ActionEvidenceIndependent && !strings.Contains(got.Body, "independent") {
						t.Fatalf("independent evidence source omitted: %#v", got)
					}
				})
			}
		}
	}
	if cases != 32 {
		t.Fatalf("legal notification cases=%d, want 32", cases)
	}
}

func TestMobileCompatibilityPushActionVocabulary(t *testing.T) {
	want := []string{
		"view_finding",
		"view_alert",
		"approve_fix",
		"decide_action",
		"view_fix_result",
	}
	got := []string{
		PushActionViewFinding,
		PushActionViewAlert,
		PushActionApproveFix,
		PushActionDecideAction,
		PushActionViewFixResult,
	}
	if fmt.Sprint(got) != fmt.Sprint(want) {
		t.Fatalf("mobile push action vocabulary = %v, want %v", got, want)
	}
}

func TestNewPatrolFindingNotification(t *testing.T) {
	t.Run("warning finding", func(t *testing.T) {
		n := NewPatrolFindingNotification("finding-123", "warning", "performance", "High CPU usage detected")

		if n.Type != PushTypePatrolFinding {
			t.Errorf("Type: got %q, want %q", n.Type, PushTypePatrolFinding)
		}
		if n.Priority != PushPriorityNormal {
			t.Errorf("Priority: got %q, want %q", n.Priority, PushPriorityNormal)
		}
		if n.Title != "High CPU usage detected" {
			t.Errorf("Title: got %q, want %q", n.Title, "High CPU usage detected")
		}
		if n.ActionType != PushActionViewFinding {
			t.Errorf("ActionType: got %q, want %q", n.ActionType, PushActionViewFinding)
		}
		if n.ActionID != "finding-123" {
			t.Errorf("ActionID: got %q, want %q", n.ActionID, "finding-123")
		}
		if n.Category != "performance" {
			t.Errorf("Category: got %q, want %q", n.Category, "performance")
		}
		if n.Severity != "warning" {
			t.Errorf("Severity: got %q, want %q", n.Severity, "warning")
		}
	})

	t.Run("critical finding uses high priority", func(t *testing.T) {
		n := NewPatrolFindingNotification("finding-456", "critical", "reliability", "Resource offline")

		if n.Type != PushTypePatrolCritical {
			t.Errorf("Type: got %q, want %q", n.Type, PushTypePatrolCritical)
		}
		if n.Priority != PushPriorityHigh {
			t.Errorf("Priority: got %q, want %q", n.Priority, PushPriorityHigh)
		}
	})
}

func TestNewExternalProbeUnavailableNotification(t *testing.T) {
	n := NewExternalProbeUnavailableNotification(" alert-123 ")
	if n.Type != PushTypeExternalProbeOffline || n.Priority != PushPriorityHigh {
		t.Fatalf("notification posture = %#v", n)
	}
	if n.Title != "External Probe Offline" {
		t.Fatalf("notification presentation = %#v", n)
	}
	if n.ActionType != PushActionViewAlert || n.ActionID != "alert-123" {
		t.Fatalf("notification must route the canonical alert into mobile attention: %#v", n)
	}
	if n.Category != "availability" || n.Severity != "warning" {
		t.Fatalf("notification routing = %#v", n)
	}
	if strings.Contains(n.Body, "agent-") || strings.Contains(n.Body, ".local") {
		t.Fatalf("notification leaked infrastructure context: %#v", n)
	}
}

func TestNewApprovalRequestNotification(t *testing.T) {
	t.Run("with risk level", func(t *testing.T) {
		n := NewApprovalRequestNotification("approval-789", "Fix disk space", "high")

		if n.Type != PushTypeApprovalRequest {
			t.Errorf("Type: got %q, want %q", n.Type, PushTypeApprovalRequest)
		}
		if n.Priority != PushPriorityHigh {
			t.Errorf("Priority: got %q, want %q", n.Priority, PushPriorityHigh)
		}
		if n.ActionType != PushActionApproveFix {
			t.Errorf("ActionType: got %q, want %q", n.ActionType, PushActionApproveFix)
		}
		if n.ActionID != "approval-789" {
			t.Errorf("ActionID: got %q, want %q", n.ActionID, "approval-789")
		}
		if !strings.Contains(n.Body, "high-risk") {
			t.Errorf("Body should contain risk level, got %q", n.Body)
		}
	})

	t.Run("without risk level", func(t *testing.T) {
		n := NewApprovalRequestNotification("approval-000", "Fix CPU", "")

		if strings.Contains(n.Body, "-risk") {
			t.Errorf("Body should not contain risk level when empty, got %q", n.Body)
		}
	})
}

func TestNewActionDecisionNotificationUsesCanonicalActionIdentity(t *testing.T) {
	n := NewActionDecisionNotification("act-123", "Restart unhealthy workload")
	if n.Type != PushTypeApprovalRequest || n.Priority != PushPriorityHigh {
		t.Fatalf("notification posture = %#v", n)
	}
	if n.ActionType != PushActionDecideAction {
		t.Fatalf("ActionType = %q, want %q", n.ActionType, PushActionDecideAction)
	}
	if n.ActionID != "act-123" {
		t.Fatalf("ActionID = %q, want canonical action id", n.ActionID)
	}
	if strings.Contains(n.Body, "fix") {
		t.Fatalf("typed action notification must not claim a command-shaped fix: %q", n.Body)
	}
}

func TestNewFixCompletedNotification(t *testing.T) {
	t.Run("success", func(t *testing.T) {
		n := NewFixCompletedNotification("finding-100", "Cleared disk space", true)

		if n.Type != PushTypeFixCompleted {
			t.Errorf("Type: got %q, want %q", n.Type, PushTypeFixCompleted)
		}
		if n.Priority != PushPriorityNormal {
			t.Errorf("Priority: got %q, want %q", n.Priority, PushPriorityNormal)
		}
		if n.ActionType != PushActionViewFixResult {
			t.Errorf("ActionType: got %q, want %q", n.ActionType, PushActionViewFixResult)
		}
		if n.ActionID != "finding-100" {
			t.Errorf("ActionID: got %q, want %q", n.ActionID, "finding-100")
		}
		if !strings.Contains(n.Body, "successfully") {
			t.Errorf("Body should indicate success, got %q", n.Body)
		}
	})

	t.Run("failure", func(t *testing.T) {
		n := NewFixCompletedNotification("finding-101", "Restart service", false)

		if !strings.Contains(n.Body, "failed") {
			t.Errorf("Body should indicate failure, got %q", n.Body)
		}
	})
}

func TestNewActionOutcomeNotificationIsHonestAboutVerification(t *testing.T) {
	for _, tc := range []struct {
		status string
		body   string
	}{
		{status: "verified", body: "Action completed and verified"},
		{status: "unverified", body: "Action completed; verification was inconclusive"},
		{status: "failed", body: "Action completed, but verification failed"},
		{status: "execution_failed", body: "Action failed before verification"},
	} {
		n := NewActionOutcomeNotification("finding-1", "Workload action", tc.status)
		if n.Body != tc.body || n.ActionType != PushActionViewFixResult || n.ActionID != "finding-1" {
			t.Fatalf("status %q notification = %#v", tc.status, n)
		}
	}
}

func TestNotificationTruncation(t *testing.T) {
	longTitle := strings.Repeat("A", 200)
	n := NewPatrolFindingNotification("id", "warning", "capacity", longTitle)

	if len(n.Title) > 100 {
		t.Errorf("Title should be truncated to 100 chars, got %d", len(n.Title))
	}
	if !strings.HasSuffix(n.Title, "...") {
		t.Errorf("Truncated title should end with '...', got %q", n.Title[len(n.Title)-5:])
	}

	// Body truncation: build a notification with a very long body by using long category/severity
	longCategory := strings.Repeat("X", 200)
	n2 := NewPatrolFindingNotification("id", "warning", longCategory, "Title")

	if len(n2.Body) > 200 {
		t.Errorf("Body should be truncated to 200 chars, got %d", len(n2.Body))
	}
}

func TestSanitizeTitle(t *testing.T) {
	tests := []struct {
		name  string
		input string
		want  string
	}{
		{
			name:  "no sensitive data passes through",
			input: "High CPU usage detected",
			want:  "High CPU usage detected",
		},
		{
			name:  "node identifier replaced",
			input: "High CPU on node-1",
			want:  "High CPU on [resource]",
		},
		{
			name:  "pve cluster name replaced",
			input: "Disk full on pve-cluster02",
			want:  "Disk full on [resource]",
		},
		{
			name:  "vm identifier replaced",
			input: "Memory leak in vm-100",
			want:  "Memory leak in [resource]",
		},
		{
			name:  "ct identifier replaced",
			input: "Container ct-200 unresponsive",
			want:  "Container [resource] unresponsive",
		},
		{
			name:  "IPv4 address replaced",
			input: "Cannot reach 192.168.1.100",
			want:  "Cannot reach [resource]",
		},
		{
			name:  "FQDN replaced",
			input: "High load on web01.prod.example.com",
			want:  "High load on [resource]",
		},
		{
			name:  "multiple identifiers replaced",
			input: "node-1 to node-2 replication lag",
			want:  "[resource] to [resource] replication lag",
		},
		{
			name:  "adjacent placeholders collapsed",
			input: "node-1 node-2 offline",
			want:  "[resource] offline",
		},
		{
			name:  "IP in parentheses",
			input: "Host (192.168.1.10) unreachable",
			want:  "Host ([resource]) unreachable",
		},
		{
			name:  "IP in brackets (Go net format)",
			input: "Connection to [10.0.0.1]:8006 failed",
			want:  "Connection to [[resource]]:8006 failed",
		},
		{
			name:  "IP with port (no brackets)",
			input: "Connection to 10.0.0.1:8006 failed",
			want:  "Connection to [resource] failed",
		},
		{
			name:  "IP after equals sign",
			input: "Failed host=172.16.0.5 timeout",
			want:  "Failed host=[resource] timeout",
		},
		{
			name:  "IP in quotes",
			input: `Error from "10.20.30.40" connection reset`,
			want:  `Error from "[resource]" connection reset`,
		},
		{
			name:  "generic words preserved",
			input: "Storage pool nearly full",
			want:  "Storage pool nearly full",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got := sanitizeTitle(tt.input)
			if got != tt.want {
				t.Errorf("sanitizeTitle(%q) = %q, want %q", tt.input, got, tt.want)
			}
		})
	}
}

func TestSanitizeTitleInBuilders(t *testing.T) {
	// Verify that all builder functions apply sanitization
	n1 := NewPatrolFindingNotification("id", "warning", "performance", "High CPU on node-prod-1")
	if strings.Contains(n1.Title, "node-prod-1") {
		t.Errorf("finding title should be sanitized, got %q", n1.Title)
	}

	n2 := NewApprovalRequestNotification("id", "Fix disk on vm-100", "")
	if strings.Contains(n2.Title, "vm-100") {
		t.Errorf("approval title should be sanitized, got %q", n2.Title)
	}

	n3 := NewFixCompletedNotification("id", "Restarted ct-50", true)
	if strings.Contains(n3.Title, "ct-50") {
		t.Errorf("fix title should be sanitized, got %q", n3.Title)
	}
}