package accessctl

import (
	"errors"
	"testing"
)

func TestStringMatcher(t *testing.T) {
	tests := []struct {
		descr   string
		matcher StringMatcher
		str     string
		match   bool
	}{
		// Pattern
		{
			descr: "pattern exact match",
			matcher: StringMatcher{
				Pattern: "foo",
			},
			str:   "foo",
			match: true,
		},
		{
			descr: "pattern exact no match",
			matcher: StringMatcher{
				Pattern: "foo",
			},
			str:   "bar",
			match: false,
		},
		{
			descr: "pattern single star match",
			matcher: StringMatcher{
				Pattern: "foo/*",
			},
			str:   "foo/bar",
			match: true,
		},
		{
			descr: "pattern single star no match 1",
			matcher: StringMatcher{
				Pattern: "foo/*",
			},
			str:   "foo",
			match: false,
		},
		{
			descr: "pattern single star no match 2",
			matcher: StringMatcher{
				Pattern: "foo/*",
			},
			str:   "foo/bar/baz",
			match: false,
		},
		{
			descr: "pattern double star match 1",
			matcher: StringMatcher{
				Pattern: "foo/**",
			},
			str:   "foo/bar",
			match: true,
		},
		{
			descr: "pattern double star match 2",
			matcher: StringMatcher{
				Pattern: "foo/**",
			},
			str:   "foo/bar/baz",
			match: true,
		},
		{
			descr: "pattern double star no match",
			matcher: StringMatcher{
				Pattern: "foo/**",
			},
			str:   "foo",
			match: false,
		},

		// Patterns, assumes individual pattern matching works correctly
		{
			descr: "patterns single match",
			matcher: StringMatcher{
				Patterns: []string{"foo"},
			},
			str:   "foo",
			match: true,
		},
		{
			descr: "patterns single no match",
			matcher: StringMatcher{
				Patterns: []string{"foo"},
			},
			str:   "bar",
			match: false,
		},
		{
			descr: "patterns multi first match",
			matcher: StringMatcher{
				Patterns: []string{"foo", "bar"},
			},
			str:   "foo",
			match: true,
		},
		{
			descr: "patterns multi second match",
			matcher: StringMatcher{
				Patterns: []string{"foo", "bar"},
			},
			str:   "bar",
			match: true,
		},
		{
			descr: "patterns multi no match",
			matcher: StringMatcher{
				Patterns: []string{"foo", "bar"},
			},
			str:   "baz",
			match: false,
		},
	}

	for _, test := range tests {
		t.Run(test.descr, func(t *testing.T) {
			err := test.matcher.Match(test.str)
			if test.match && err != nil {
				t.Fatalf("expected to match, got %v", err)
			} else if !test.match && !errors.As(err, new(ErrFilterNoMatch)) {
				t.Fatalf("expected ErrFilterNoMatch, got %#v", err)
			}
		})
	}
}

func TestFilterFilesChanged(t *testing.T) {
	mkReq := func(paths ...string) CommitRequest {
		return CommitRequest{FilesChanged: paths}
	}

	runCommitMatchTests(t, []filterCommitMatchTest{
		{
			descr: "no paths",
			filter: FilterFilesChanged{
				StringMatcher: StringMatcher{Pattern: "foo"},
			},
			req:   mkReq(),
			match: false,
		},
		{
			descr: "all paths against one pattern",
			filter: FilterFilesChanged{
				StringMatcher: StringMatcher{Pattern: "foo/*"},
			},
			req:   mkReq("foo/bar", "foo/baz"),
			match: true,
		},
		{
			descr: "all paths against multiple patterns",
			filter: FilterFilesChanged{
				StringMatcher: StringMatcher{Patterns: []string{"foo", "bar"}},
			},
			req:   mkReq("foo", "bar"),
			match: true,
		},
		{
			descr: "some paths against one pattern",
			filter: FilterFilesChanged{
				StringMatcher: StringMatcher{Pattern: "foo"},
			},
			req:   mkReq("foo", "bar"),
			match: true,
		},
		{
			descr: "some paths against many patterns",
			filter: FilterFilesChanged{
				StringMatcher: StringMatcher{Patterns: []string{"foo", "bar"}},
			},
			req:   mkReq("foo", "baz"),
			match: true,
		},
		{
			descr: "no paths against one pattern",
			filter: FilterFilesChanged{
				StringMatcher: StringMatcher{Pattern: "foo"},
			},
			req:   mkReq("baz", "buz"),
			match: false,
		},
		{
			descr: "no paths against many patterns",
			filter: FilterFilesChanged{
				StringMatcher: StringMatcher{Patterns: []string{"foo", "bar"}},
			},
			req:   mkReq("baz", "buz"),
			match: false,
		},
	})
}