package rbxbuilder

import (
	"git.itzana.me/itzaname/rbxfile"
	"github.com/google/uuid"
	"io/ioutil"
	"os"
	"strings"
)

var seperator = string(os.PathSeparator)

func isScript(instance *rbxfile.Instance) bool {
	var scriptTypes = []string{"LocalScript", "ModuleScript", "Script"}
	for i := 0; i < len(scriptTypes); i++ {
		if instance.ClassName == scriptTypes[i] {
			return true
		}
	}
	return false

}

func isFolder(instance *rbxfile.Instance) bool {
	return instance.ClassName == "Folder"
}

func getSource(instance *rbxfile.Instance) string {
	if source, ok := instance.Properties["Source"]; ok {
		return source.String()
	}
	return "BUILD ERROR: FAILED TO LOAD SOURCE"
}

func getPath(instance *rbxfile.Instance) []string {
	if instance == nil {
		return []string{}
	}
	return append(getPath(instance.Parent()), instance.Name())
}

func getPathString(instance *rbxfile.Instance) string {
	return seperator + strings.Join(getPath(instance), seperator)
}

func getScriptFilePath(instance *rbxfile.Instance) []string {
	path := getPath(instance)
	if len(instance.Children) > 0 {
		path = append(path, instance.Name())
	}
	if len(path) > 0 {
		path[len(path)-1] += ".lua"
	}
	return path
}

func getScriptFilePathString(instance *rbxfile.Instance) string {
	return seperator + strings.Join(getScriptFilePath(instance), seperator)
}

func instanceFromScriptPath(root *rbxfile.Root, path string) *rbxfile.Instance {
	paths := strings.Split(strings.TrimPrefix(strings.TrimSuffix(path, ".lua"), seperator), seperator)
	if len(path) == 0 {
		return nil
	}

	for i := 0; i < len(root.Instances); i++ {
		instance := root.Instances[i]
		if instance.Name() != paths[0] {
			continue
		}
		for j := 0; j < len(paths); j++ {
			if instance.Name() == paths[j] {
				if len(paths)-1 == j {
					return instance
				}
			}
			for _, child := range instance.Children {
				if child.Name() == paths[j] {
					if len(paths)-1 == j {
						return child
					}
					instance = child
					break
				}
			}
		}
	}

	return nil
}

func loadScript(name string, class string, path string) *rbxfile.Instance {
	data, err := ioutil.ReadFile(path)
	if err != nil {
		return nil
	}

	script := rbxfile.NewInstance(class, nil)
	script.Properties["AttributesSerialize"] = rbxfile.NewValue(rbxfile.TypeBinaryString)
	script.Properties["LinkedSource"] = rbxfile.NewValue(rbxfile.TypeContent)
	script.Properties["Name"] = rbxfile.ValueString(name)
	script.Properties["ScriptGuid"] = rbxfile.ValueString("{" + uuid.New().String() + "}")
	script.Properties["Source"] = rbxfile.ValueProtectedString(data)
	script.Properties["Tags"] = rbxfile.ValueBinaryString("")

	return script
}

func generateFolder(name string) *rbxfile.Instance {
	script := rbxfile.NewInstance("Folder", nil)
	script.Properties["AttributesSerialize"] = rbxfile.NewValue(rbxfile.TypeBinaryString)
	script.Properties["Name"] = rbxfile.ValueString(name)
	script.Properties["SourceAssetId"] = rbxfile.ValueInt64(-1)
	script.Properties["Tags"] = rbxfile.ValueBinaryString("")

	return script
}