package compliance

import (
	"strings"
	"testing"

	sharedcompliance "github.com/geo-platform/tenant-api/internal/shared/compliance"
)

func TestDecideMandatoryBlocksAnyHit(t *testing.T) {
	levels := []string{"block", "high", "medium", "info"}
	for _, level := range levels {
		level := level
		t.Run(level, func(t *testing.T) {
			got := decide("mandatory", &level, 1)
			if got != sharedcompliance.GateDecisionBlock {
				t.Fatalf("decide mandatory %s hit = %s, want %s", level, got, sharedcompliance.GateDecisionBlock)
			}
		})
	}
}

func TestDecideAdvisoryNeedsAckOnAnyHit(t *testing.T) {
	level := "info"
	got := decide("advisory", &level, 1)
	if got != sharedcompliance.GateDecisionNeedsAck {
		t.Fatalf("decide advisory hit = %s, want %s", got, sharedcompliance.GateDecisionNeedsAck)
	}
}

func TestDecidePassesWithoutHits(t *testing.T) {
	level := "block"
	got := decide("mandatory", &level, 0)
	if got != sharedcompliance.GateDecisionPass {
		t.Fatalf("decide without hits = %s, want %s", got, sharedcompliance.GateDecisionPass)
	}
}

func TestComplianceAIPointCostUsesOutputBoundary(t *testing.T) {
	t.Parallel()

	tests := []struct {
		name      string
		chars     int
		baseChars int
		want      int
	}{
		{name: "empty output minimum", chars: 0, baseChars: 1000, want: 1},
		{name: "single char", chars: 1, baseChars: 1000, want: 1},
		{name: "exactly one base", chars: 1000, baseChars: 1000, want: 1},
		{name: "one over base", chars: 1001, baseChars: 1000, want: 2},
		{name: "default base", chars: 2000, baseChars: 0, want: 2},
	}

	for _, tt := range tests {
		tt := tt
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()
			if got := calculateAIPointCost(tt.chars, tt.baseChars); got != tt.want {
				t.Fatalf("calculateAIPointCost(%d, %d) = %d, want %d", tt.chars, tt.baseChars, got, tt.want)
			}
		})
	}
}

func TestComplianceAIPointCharsTrimWhitespace(t *testing.T) {
	t.Parallel()

	got := countAIPointChars("  " + strings.Repeat("字", 1001) + "\n")
	if got != 1001 {
		t.Fatalf("countAIPointChars = %d, want 1001", got)
	}
}