package Drivers

import (
	"AnP/Models"
	"AnP/Utils"
	"encoding/json"
	"mime"
	"os"
	"strings"
	"time"
)

type URLPathDriver struct {
	anp        Models.AnPModel
	root_paths []string
	is_dos     bool
	slash      string
}

func NewURLPathDriver(anp Models.AnPModel) URLPathDriver {

	var driver URLPathDriver = URLPathDriver{
		anp:        anp,
		root_paths: []string{""},
		is_dos:     false,
		slash:      "/",
	}

	var path string = GetCurrentDirectory()

	if path != "" {

		driver.is_dos = strings.Contains(path, "\\")
		driver.root_paths = append(driver.root_paths, path)

		if driver.is_dos {
			driver.slash = "\\"
		}

		for range 3 {
			path = Utils.Patterns.RE_PARENT_PATH.ReplaceAllString(path, "$1")
			if path == "" {
				break
			}
			driver.root_paths = append(driver.root_paths, path)
		}

	}

	return driver
}

func GetCurrentDirectory() string {

	var path string = ""

	executable_path, exception := os.Executable()

	if exception != nil {
		command_path, exception := os.Getwd()
		if exception == nil {
			path = command_path
		}
	} else {
		path = executable_path
	}

	return path
}

func (_self URLPathDriver) FixPath(path string) string {
	return Utils.Patterns.RE_SLASH.ReplaceAllString(path, _self.slash)
}

func (_self URLPathDriver) GetAbsolutePath(path string) string {

	for _, root := range _self.root_paths {

		var full_path string = root

		if full_path != "" {
			full_path += _self.slash
		}
		full_path = _self.FixPath(full_path + path)

		if _, error := os.Stat(full_path); error == nil {
			path = full_path
			break
		}

	}

	return path
}

func (_self URLPathDriver) LoadFile(path string) string {

	data, _ := os.ReadFile(_self.GetAbsolutePath(path))

	return string(data)
}

func (_self URLPathDriver) LoadBinaryFile(path string) []byte {

	data, _ := os.ReadFile(_self.GetAbsolutePath(path))

	return data
}

func (_self URLPathDriver) LoadJSON(inputs any, callback func(any), only_dictionaries bool) {
	switch group := inputs.(type) {
	case map[string]any:
		callback(group)
	case []any:
		if only_dictionaries {
			for _, subgroup := range group {
				_self.LoadJSON(subgroup, callback, only_dictionaries)
			}
		} else {
			callback(group)
		}
	case string:

		var data any

		if json.Unmarshal([]byte(group), &data) != nil {
			json.Unmarshal([]byte(_self.LoadFile(group)), &data)
		}

		_self.LoadJSON(data, callback, only_dictionaries)

	}
}

func (_self URLPathDriver) GetSlash() string {
	return _self.slash
}

func GetExtension(path string) string {

	var matches Utils.PatternMatch = Utils.Patterns.Match(path, Utils.Patterns.RE_EXTENSION)

	if matches.Ok {
		return matches.Groups[1]
	}
	return ""
}

func GetMime(path string) string {

	var mime_type string = mime.TypeByExtension("." + GetExtension(path))

	if mime_type != "" {
		return mime_type
	}
	return "application/octet-stream"
}

func PathExists(path string) bool {

	_, error := os.Stat(path)

	return error == nil
}

func FileExists(path string) bool {

	stat, error := os.Stat(path)

	return error == nil && !stat.IsDir()
}

func DirectoryExists(path string) bool {

	stat, error := os.Stat(path)

	return error == nil && stat.IsDir()
}

func LastDateModified(path string) *time.Time {

	stat, error := os.Stat(path)

	if error == nil {

		var date time.Time = stat.ModTime()

		return &date
	}
	return nil
}