package main

import (
	"testing"

	"src.lwithers.me.uk/go/htpack/cmd/htpacker/packer"
)

func TestParseGlobs(t *testing.T) {
	ctGlobs, err := parseGlobs([]string{
		"*.foo:text/html",
		"*.bar:text/plain",
		"baz/qux/*.js:application/javascript",
		"/abs/file:image/png",
	})
	if err != nil {
		t.Fatal(err)
	}

	check := func(pos int, pattern, contentType string, pathComponents int) {
		if pos >= len(ctGlobs) {
			t.Errorf("entry %d not present", pos)
			return
		}

		if pattern != ctGlobs[pos].pattern {
			t.Errorf("entry %d: expected pattern %q but got %q",
				pos, pattern, ctGlobs[pos].pattern)
		}

		if contentType != ctGlobs[pos].contentType {
			t.Errorf("entry %d: expected content type %q but got %q",
				pos, contentType, ctGlobs[pos].contentType)
		}

		if pathComponents != ctGlobs[pos].pathComponents {
			t.Errorf("entry %d: expected num. path components %d but got %d",
				pos, pathComponents, ctGlobs[pos].pathComponents)
		}
	}

	check(0, "*.foo", "text/html", 1)
	check(1, "*.bar", "text/plain", 1)
	check(2, "baz/qux/*.js", "application/javascript", 3)
	check(3, "abs/file", "image/png", -1)
}

func TestParseGlobsErrSep(t *testing.T) {
	const badValue = "hello/dave.js" // missing ":" separator
	_, err := parseGlobs([]string{badValue})
	switch err := err.(type) {
	case *parseGlobError:
		if err.Value != badValue {
			t.Errorf("expected value %q but got %q", badValue, err.Value)
		}
	case nil:
		t.Fatal("expected error")
	default:
		t.Errorf("unexpected error type %T (value %v)", err, err)
	}
}

func TestParseGlobsErrPattern(t *testing.T) {
	const badValue = "[-z]:foo/bar" // malformed character class
	_, err := parseGlobs([]string{badValue})
	switch err := err.(type) {
	case *parseGlobError:
		if err.Value != badValue {
			t.Errorf("expected value %q but got %q", badValue, err.Value)
		}
	case nil:
		t.Fatal("expected error")
	default:
		t.Errorf("unexpected error type %T (value %v)", err, err)
	}
}

func TestApplyContentTypes(t *testing.T) {
	// XXX: we program our _expectation_ of content-type into the Filename field
	ftp := packer.FilesToPack{
		"foo.txt":     packer.FileToPack{Filename: "text/plain"},
		"baz/foo.txt": packer.FileToPack{Filename: "text/plain"},

		"baz/qux.png":     packer.FileToPack{Filename: "image/png"},
		"foo/qux.png":     packer.FileToPack{},
		"foo/baz/qux.png": packer.FileToPack{Filename: "image/png"},

		"bar.jpeg":         packer.FileToPack{},
		"foo/baz/bar.jpeg": packer.FileToPack{},
		"baz/bar.jpeg":     packer.FileToPack{Filename: "image/jpeg"},
	}

	ctGlobs, err := parseGlobs([]string{
		"*.txt:text/plain",         // should match anywhere
		"baz/qux.png:image/png",    // won't match /foo/qux.png
		"/baz/bar.jpeg:image/jpeg", // exact prefix match
	})
	if err != nil {
		t.Fatal(err)
	}

	ctGlobs.ApplyContentTypes(ftp)
	for k, v := range ftp {
		if v.Filename != v.ContentType {
			t.Errorf("filename %q: expected content type %q but got %q",
				k, v.Filename, v.ContentType)
		}
	}
}