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package day

import "testing"

var types = []ActivityType{
	{ID: "1", Name: "ARCHER", Color: "#c04000"},
	{ID: "2", Name: "Archery practice", Color: "#00c040"},
	{ID: "3", Name: "Foofaraw", Color: "#4000c0"},
	{ID: "4", Name: "Reading", Color: "#404040"},
}

var typesWithDuplicates = []ActivityType{
	{ID: "4a", Name: "Reading", Color: "#404040"},
	{ID: "4b", Name: "READING", Color: "#505050"},
}

func names(ms []ActivityType) []string {
	out := make([]string, len(ms))
	for i, m := range ms {
		out[i] = m.Name
	}
	return out
}

func ids(ms []ActivityType) []string {
	out := make([]string, len(ms))
	for i, m := range ms {
		out[i] = m.ID
	}
	return out
}

func TestMatchActivity(t *testing.T) {
	cases := []struct {
		query string
		want  []string
	}{
		{"archer", []string{"ARCHER"}},          // exact beats prefix
		{"arch", []string{"ARCHER", "Archery practice"}}, // prefix, both
		{"foo", []string{"Foofaraw"}},
		{"ading", []string{"Reading"}},          // substring fallback
		{"xyz", []string{}},
		{"READING", []string{"Reading"}},
		{"", []string{}},                        // empty query
		{"  ", []string{}},                      // whitespace-only query
	}
	for _, c := range cases {
		got := names(MatchActivity(c.query, types))
		if len(got) != len(c.want) {
			t.Fatalf("%q: got %v, want %v", c.query, got, c.want)
		}
		for i := range got {
			if got[i] != c.want[i] {
				t.Fatalf("%q: got %v, want %v", c.query, got, c.want)
			}
		}
	}
}

func TestMatchActivityExactTies(t *testing.T) {
	// When multiple names match exactly (case-insensitive), first wins
	got := ids(MatchActivity("reading", typesWithDuplicates))
	if len(got) != 1 {
		t.Fatalf("reading: got %d results, want 1", len(got))
	}
	if got[0] != "4a" {
		t.Fatalf("reading: got ID %q, want %q (first match)", got[0], "4a")
	}
}