package conditions

import (
	"testing"
	"time"

	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
)

func TestIsInProgressForIssues(t *testing.T) {
	// In-progress reasons are suppressed; genuine failures that merely LOOK
	// transient (ArtifactFailed/ChartNotReady) are NOT.
	cases := map[string]bool{
		"Progressing":    true,
		"Reconciling":    true,
		"Pending":        true,
		"ArtifactFailed": false, // genuine stuck failure — must surface
		"ChartNotReady":  false, // genuine stuck failure — must surface
		"BuildFailed":    false, // not transient at all
		"":               false,
	}
	for reason, want := range cases {
		if got := IsInProgressForIssues(reason); got != want {
			t.Errorf("IsInProgressForIssues(%q) = %v, want %v", reason, got, want)
		}
	}
	// The genuine-failure reasons ARE in the health-display transient set.
	for _, r := range []string{"ArtifactFailed", "ChartNotReady"} {
		if !IsTransientConditionReason(r) || !IsGenuineFailureReason(r) {
			t.Errorf("%q should be both transient (health) and genuine-failure (issues)", r)
		}
	}
}

func TestFindFalseConditionWithTimeDistinguishesTimestampPresence(t *testing.T) {
	now := time.Now().UTC().Truncate(time.Nanosecond)
	tests := []struct {
		name      string
		timestamp any
		wantTime  time.Time
		wantKnown bool
	}{
		{name: "absent"},
		{name: "malformed", timestamp: "not-a-time"},
		{name: "exact now", timestamp: now.Format(time.RFC3339Nano), wantTime: now, wantKnown: true},
		{name: "old", timestamp: now.Add(-2 * time.Hour).Format(time.RFC3339Nano), wantTime: now.Add(-2 * time.Hour), wantKnown: true},
		{name: "future is preserved for caller validation", timestamp: now.Add(time.Hour).Format(time.RFC3339Nano), wantTime: now.Add(time.Hour), wantKnown: true},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			condition := map[string]any{"type": "Ready", "status": "False"}
			if tt.timestamp != nil {
				condition["lastTransitionTime"] = tt.timestamp
			}
			got, found := FindFalseConditionWithTime(cond(map[string]any{"conditions": []any{condition}}), "Ready")
			if !found || got.HasLastTransitionTime != tt.wantKnown || !got.LastTransitionTime.Equal(tt.wantTime) {
				t.Fatalf("got found=%v known=%v time=%v, want found=true known=%v time=%v", found, got.HasLastTransitionTime, got.LastTransitionTime, tt.wantKnown, tt.wantTime)
			}
		})
	}
}

func cond(status map[string]any) *unstructured.Unstructured {
	return &unstructured.Unstructured{Object: map[string]any{"status": status}}
}

func TestFindFalseCondition(t *testing.T) {
	readyFalse := cond(map[string]any{"conditions": []any{
		map[string]any{"type": "Ready", "status": "False", "reason": "InstallFailed", "message": "boom"},
	}})
	ct, reason, msg, _, ok := FindFalseCondition(readyFalse, "Ready")
	if !ok || ct != "Ready" || reason != "InstallFailed" || msg != "boom" {
		t.Fatalf("got (%q,%q,%q,%v), want Ready/InstallFailed/boom/true", ct, reason, msg, ok)
	}

	readyTrue := cond(map[string]any{"conditions": []any{
		map[string]any{"type": "Ready", "status": "True"},
	}})
	if _, _, _, _, ok := FindFalseCondition(readyTrue); ok {
		t.Error("a True condition must not be reported as a False-condition hit")
	}

	v1b2 := cond(map[string]any{"v1beta2": map[string]any{"conditions": []any{
		map[string]any{"type": "Available", "status": "False"},
	}}})
	if _, _, _, _, ok := FindFalseCondition(v1b2); !ok {
		t.Error("status.v1beta2.conditions should be read")
	}
}

func TestFindFalseCondition_V1beta2TakesPrecedence(t *testing.T) {
	// When both slices carry a False condition, v1beta2 is the authoritative
	// one (CAPI v1beta2 is the forward shape) and must win.
	both := cond(map[string]any{
		"v1beta2": map[string]any{"conditions": []any{
			map[string]any{"type": "Ready", "status": "False", "reason": "V1Beta2Reason"},
		}},
		"conditions": []any{
			map[string]any{"type": "Ready", "status": "False", "reason": "V1Beta1Reason"},
		},
	})
	_, reason, _, _, ok := FindFalseCondition(both, "Ready")
	if !ok || reason != "V1Beta2Reason" {
		t.Fatalf("got reason=%q ok=%v, want V1Beta2Reason/true (v1beta2 must take precedence)", reason, ok)
	}
}

func TestFind(t *testing.T) {
	tests := []struct {
		name      string
		object    *unstructured.Unstructured
		condition string
		want      State
		found     bool
	}{
		{
			name: "returns structured condition",
			object: cond(map[string]any{"conditions": []any{
				map[string]any{"type": "Available", "status": "False", "reason": "ServiceNotFound", "message": "backend is missing"},
			}}),
			condition: "Available",
			want:      State{Status: "False", Reason: "ServiceNotFound", Message: "backend is missing"},
			found:     true,
		},
		{
			name: "preserves malformed status",
			object: cond(map[string]any{"conditions": []any{
				map[string]any{"type": "Available", "status": true},
			}}),
			condition: "Available",
			want:      State{},
			found:     true,
		},
		{name: "condition absent", object: cond(map[string]any{}), condition: "Available"},
		{name: "nil object", condition: "Available"},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, found := Find(tt.object, tt.condition)
			if found != tt.found || got != tt.want {
				t.Fatalf("Find() = (%+v, %v), want (%+v, %v)", got, found, tt.want, tt.found)
			}
		})
	}
}

func TestFind_V1beta2TakesPrecedence(t *testing.T) {
	object := cond(map[string]any{
		"v1beta2": map[string]any{"conditions": []any{
			map[string]any{"type": "Available", "status": "True", "reason": "Current"},
		}},
		"conditions": []any{
			map[string]any{"type": "Available", "status": "False", "reason": "Legacy"},
		},
	})
	got, found := Find(object, "Available")
	if !found || got.Status != "True" || got.Reason != "Current" {
		t.Fatalf("Find() = (%+v, %v), want v1beta2 condition", got, found)
	}
}

func TestFalseConditionPreservesObservedGeneration(t *testing.T) {
	for _, shape := range []string{"conditions", "v1beta2"} {
		for _, generation := range []int64{0, 1, 2} {
			c := map[string]any{"type": "Ready", "status": "False", "reason": "Unavailable", "observedGeneration": generation}
			status := map[string]any{"conditions": []any{c}}
			if shape == "v1beta2" {
				status = map[string]any{"v1beta2": status}
			}
			got, found := FindFalseConditionWithTime(cond(status), "Ready")
			if !found || got.ObservedGeneration != generation {
				t.Fatalf("shape=%s want generation %d got %+v", shape, generation, got)
			}
		}
	}
}