package pwgenerator

import (
	`bytes`
	`embed`
	`encoding/json`
	`encoding/xml`
	`fmt`
	"testing"

	`github.com/BurntSushi/toml`
	`github.com/goccy/go-yaml`
)

var (
	//go:embed "_testdata"
	testFiles embed.FS
)

var (
	testGen *GenOpts = &GenOpts{
		Alpha:           true,
		Numeric:         true,
		Symbols:         true,
		ExtendedSymbols: false,
		CountUpper:      0,
		CountLower:      0,
		CountNumbers:    0,
		CountSymbols:    0,
		CountExtended:   0,
		DisabledChars: CharSet{
			Char('a'),
			Char('b'),
			Char('c'),
			Char('😊'),
		},
		LengthMin: 0,
		LengthMax: 0,
		Count:     0,
	}
	testGenNoDisabled *GenOpts = &GenOpts{
		Alpha:           true,
		Numeric:         true,
		Symbols:         true,
		ExtendedSymbols: false,
		CountUpper:      0,
		CountLower:      0,
		CountNumbers:    0,
		CountSymbols:    0,
		CountExtended:   0,
		DisabledChars:   nil,
		LengthMin:       0,
		LengthMax:       0,
		Count:           0,
	}
)

func TestParse(t *testing.T) {

	var cmpB []byte
	var err error
	var g *GenOpts
	var mB map[string][]byte = make(map[string][]byte)

	if cmpB, err = json.Marshal(testGen); err != nil {
		t.Fatal(err)
	}

	for _, i := range []string{
		"json",
		"xml",
		"yml",
		"toml",
	} {
		g = new(GenOpts)

		if mB[i], err = testFiles.ReadFile(fmt.Sprintf("_testdata/test.%s", i)); err != nil {
			t.Fatal(err)
		}

		switch i {
		case "json":
			if err = json.Unmarshal(mB[i], g); err != nil {
				t.Fatal(err)
			}
		case "xml":
			if err = xml.Unmarshal(mB[i], g); err != nil {
				t.Fatal(err)
			}
		case "yml":
			if err = yaml.Unmarshal(mB[i], g); err != nil {
				t.Fatal(err)
			}
		case "toml":
			if err = toml.Unmarshal(mB[i], g); err != nil {
				t.Fatal(err)
			}
		}
		if mB[i], err = json.Marshal(g); err != nil {
			t.Fatal(err)
		}

		if !bytes.Equal(mB[i], cmpB) {
			t.Fatalf("Syntax/testfile %s failed comparison.", i)
		}
	}
}

func TestRender(t *testing.T) {

	var b []byte
	var err error
	var buf *bytes.Buffer = new(bytes.Buffer)

	// JSON
	if b, err = json.MarshalIndent(testGen, "", "  "); err != nil {
		t.Fatal(err)
	}
	buf.WriteString("# JSON\n")
	buf.Write(b)
	buf.WriteString("\n\n")

	// XML
	if b, err = xml.MarshalIndent(testGen, "", "  "); err != nil {
		t.Fatal(err)
	}
	buf.WriteString("# XML\n")
	buf.Write(b)
	buf.WriteString("\n\n")

	// YAML
	if b, err = yaml.Marshal(testGen); err != nil {
		t.Fatal(err)
	}
	buf.WriteString("# YAML\n")
	buf.Write(b)
	buf.WriteString("\n\n")

	// TOML
	if b, err = toml.Marshal(testGen); err != nil {
		t.Fatal(err)
	}
	buf.WriteString("# TOML\n")
	buf.Write(b)
	buf.WriteString("\n\n")

	t.Log(buf.String())
}