// Copyright 2025 The Dawn & Tint Authors
//
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package reducedglob

import (
	"testing"

	"github.com/stretchr/testify/require"
)

func TestMatchcase(t *testing.T) {
	tests := []struct {
		name          string
		pattern       string
		matchedString string
		expectedMatch bool
	}{
		{
			name:          "Exact match",
			pattern:       "test",
			matchedString: "test",
			expectedMatch: true,
		},
		{
			name:          "Exact match with starting glob",
			pattern:       "*test",
			matchedString: "test",
			expectedMatch: true,
		},
		{
			name:          "Exact match with trailing glob",
			pattern:       "test*",
			matchedString: "test",
			expectedMatch: true,
		},
		{
			name:          "Starting glob match",
			pattern:       "*foobar",
			matchedString: "test_foobar",
			expectedMatch: true,
		},
		{
			name:          "Trailing glob match",
			pattern:       "test_*",
			matchedString: "test_foobar",
			expectedMatch: true,
		},
		{
			name:          "Glob match in the middle",
			pattern:       "test*bar",
			matchedString: "test_foobar",
			expectedMatch: true,
		},
		{
			name:          "Match everything",
			pattern:       "*",
			matchedString: "test_foobar",
			expectedMatch: true,
		},
		{
			name:          "Multiple globs, starting and trailing",
			pattern:       "*_*",
			matchedString: "test_foobar",
			expectedMatch: true,
		},
		{
			name:          "Multiple globs in the middle",
			pattern:       "t*f*r",
			matchedString: "test_foobar",
			expectedMatch: true,
		},
		{
			name:          "Case sensitivity",
			pattern:       "test*",
			matchedString: "Test_foobar",
			expectedMatch: false,
		},
		{
			name:          "Escaped glob does not match non-*",
			pattern:       "test_\\*",
			matchedString: "test_.",
			expectedMatch: false,
		},
		{
			name:          "Escaped glob does match *",
			pattern:       "test_\\*",
			matchedString: "test_*",
			expectedMatch: true,
		},
		{
			name:          "No implicit starting glob",
			pattern:       "foobar",
			matchedString: "test_foobar",
			expectedMatch: false,
		},
		{
			name:          "No implicit trailing glob",
			pattern:       "test",
			matchedString: "test_foobar",
			expectedMatch: false,
		},
		{
			name:          "Offset calculated correctly",
			pattern:       "*t*_*_*",
			matchedString: "test_foobar",
			expectedMatch: false,
		},
	}
	for _, testCase := range tests {
		t.Run(testCase.name, func(t *testing.T) {
			g := NewReducedGlob(testCase.pattern)
			require.Equal(t, g.Matchcase(testCase.matchedString), testCase.expectedMatch)
		})
	}
}

func TestFindAllIndices(t *testing.T) {
	tests := []struct {
		name            string
		s               string
		substr          string
		expectedIndices []int
	}{
		{
			name:            "Empty string",
			s:               "",
			substr:          "*",
			expectedIndices: []int{},
		},
		{
			name:            "Non-empty string",
			s:               "*foo*bar*asdf*qwerty*",
			substr:          "*",
			expectedIndices: []int{0, 4, 8, 13, 20},
		},
	}
	for _, testCase := range tests {
		t.Run(testCase.name, func(t *testing.T) {
			require.Equal(t, findAllIndices(testCase.s, testCase.substr), testCase.expectedIndices)
		})
	}
}