unit uConfigManager;

interface

uses
  Winapi.Windows, SysUtils, Classes, System.JSON, System.Generics.Collections,
  System.IniFiles, System.IOUtils, System.Rtti, System.StrUtils;

type
  TConfigValueType = (cvString, cvInteger, cvBoolean, cvFloat, cvArray, cvObject);

  TConfigItem = record
    Key: string;
    Value: TValue;
    ValueType: TConfigValueType;
    DefaultValue: TValue;
    Description: string;
    Section: string;
    procedure Clear;
    class function Create(const AKey, ASection: string; AValue: TValue; ADescription: string = ''): TConfigItem; static;
  end;

  TConfigManager = class
  private
    FConfigFile: string;
    FConfigItems: TDictionary<string, TConfigItem>;
    FJSONFile: string;
    FIsReadOnly: Boolean;
    FAutoSave: Boolean;
    procedure LoadFromINI;
    procedure SaveToINI;
    procedure LoadFromJSON;
    procedure SaveToJSON;
    function GetFullKey(const Section, Key: string): string;
    function GetConfigValue(const Key: string; const Default: TValue): TValue;
  public
    constructor Create(const AConfigFile: string; AAutoSave: Boolean = True);
    destructor Destroy; override;
    procedure Load;
    procedure Save;
    function GetString(const Section, Key, Default: string): string;
    function GetInteger(const Section, Key: string; Default: Integer): Integer;
    function GetBoolean(const Section, Key: string; Default: Boolean): Boolean;
    function GetFloat(const Section, Key: string; Default: Double): Double;
    function GetArray(const Section, Key: string; Default: TArray<string>): TArray<string>;
    function GetObject(const Section, Key: string; Default: TJSONObject = nil): TJSONObject;
    procedure SetString(const Section, Key, Value: string);
    procedure SetInteger(const Section, Key: string; Value: Integer);
    procedure SetBoolean(const Section, Key: string; Value: Boolean);
    procedure SetFloat(const Section, Key: string; Value: Double);
    procedure SetArray(const Section, Key: string; Value: TArray<string>);
    procedure SetObject(const Section, Key: string; Value: TJSONObject);
    procedure AddConfigItem(const Item: TConfigItem);
    function HasKey(const Section, Key: string): Boolean;
    procedure RemoveKey(const Section, Key: string);
    procedure Clear;
    function GetAllKeys(const Section: string): TArray<string>;
    property ConfigFile: string read FConfigFile write FConfigFile;
    property IsReadOnly: Boolean read FIsReadOnly write FIsReadOnly;
    property AutoSave: Boolean read FAutoSave write FAutoSave;
  end;

  TAppConfig = class
  private
    FConfigManager: TConfigManager;
  public
    constructor Create;
    destructor Destroy; override;
    property ConfigMgr: TConfigManager read FConfigManager;
    function GetServerURL: string;
    function GetServerPort: Integer;
    function GetTimeout: Integer;
    function GetRetryCount: Integer;
    function GetPLCHost: string;
    function GetPLCPort: Integer;
    function GetSerialPort: string;
    function GetBaudRate: Integer;
    function GetBatchSize: Integer;
    function GetAutoSave: Boolean;
    function GetLogLevel: Integer;
    function GetFileServerPath: string;
    function GetBackupServerPath: string;
    function GetSyncInterval: Integer;
    function GetMaxRetryCount: Integer;
    function GetLogFileDir: string;
    function GetLogFileMaxSize: Integer;
    function GetCORSOrigin: string;
    function GetAPIPath: string;
    function GetAdminAPIPath: string;
    procedure Save;
  end;

function Config: TAppConfig;

implementation

var
  FAppConfig: TAppConfig;

function Config: TAppConfig;
begin
  if FAppConfig = nil then
    FAppConfig := TAppConfig.Create;
  Result := FAppConfig;
end;

{ TConfigItem }

procedure TConfigItem.Clear;
begin
  Key := '';
  Value := TValue.Empty;
  ValueType := cvString;
  DefaultValue := TValue.Empty;
  Description := '';
  Section := '';
end;

class function TConfigItem.Create(const AKey, ASection: string; AValue: TValue; ADescription: string): TConfigItem;
begin
  Result.Clear;
  Result.Key := AKey;
  Result.Section := ASection;
  Result.Value := AValue;
  Result.DefaultValue := AValue;
  Result.Description := ADescription;

  // 正确判断类型 XE11 兼容
  if AValue.TypeInfo = TypeInfo(string) then
    Result.ValueType := cvString
  else if AValue.TypeInfo = TypeInfo(Integer) then
    Result.ValueType := cvInteger
  else if AValue.TypeInfo = TypeInfo(Boolean) then
    Result.ValueType := cvBoolean
  else if AValue.TypeInfo = TypeInfo(Double) then
    Result.ValueType := cvFloat
  else
    Result.ValueType := cvString;
end;

{ TConfigManager }

constructor TConfigManager.Create(const AConfigFile: string; AAutoSave: Boolean);
begin
  inherited Create;
  FConfigFile := AConfigFile;
  FConfigItems := TDictionary<string, TConfigItem>.Create;
  FAutoSave := AAutoSave;
  FIsReadOnly := False;
  FJSONFile := ChangeFileExt(AConfigFile, '.json');
  Load;
end;

destructor TConfigManager.Destroy;
begin
  if FAutoSave then
    Save;
  FConfigItems.Free;
  inherited;
end;

function TConfigManager.GetFullKey(const Section, Key: string): string;
begin
  Result := Section + '.' + Key;
end;

function TConfigManager.GetConfigValue(const Key: string; const Default: TValue): TValue;
var
  Item: TConfigItem;
begin
  if FConfigItems.TryGetValue(Key, Item) then
    Result := Item.Value
  else
    Result := Default;
end;

procedure TConfigManager.LoadFromINI;
var
  Sections: TStringList;
  Section, Key, ValueStr: string;
  Items: TStringList;
  I, J: Integer;
  INIFile: TIniFile;
begin
  if not FileExists(FConfigFile) then
    Exit;

  INIFile := TIniFile.Create(FConfigFile);
  try
    Sections := TStringList.Create;
    try
      INIFile.ReadSections(Sections);
      for I := 0 to Sections.Count - 1 do
      begin
        Section := Sections[I];
        Items := TStringList.Create;
        try
          INIFile.ReadSection(Section, Items);
          for J := 0 to Items.Count - 1 do
          begin
            Key := Items[J];
            ValueStr := INIFile.ReadString(Section, Key, '');
            FConfigItems.AddOrSetValue(GetFullKey(Section, Key),
              TConfigItem.Create(Key, Section, TValue.From(ValueStr)));
          end;
        finally
          Items.Free;
        end;
      end;
    finally
      Sections.Free;
    end;
  finally
    INIFile.Free;
  end;
end;

procedure TConfigManager.SaveToINI;
var
  Item: TConfigItem;
  FullKey: string;
  INIFile: TIniFile;
begin
  if FIsReadOnly then Exit;

  INIFile := TIniFile.Create(FConfigFile);
  try
    for FullKey in FConfigItems.Keys do
    begin
      Item := FConfigItems[FullKey];
      case Item.ValueType of
        cvString:
          INIFile.WriteString(Item.Section, Item.Key, Item.Value.AsString);
        cvInteger:
          INIFile.WriteInteger(Item.Section, Item.Key, Item.Value.AsInteger);
        cvBoolean:
          INIFile.WriteBool(Item.Section, Item.Key, Item.Value.AsBoolean);
        cvFloat:
          INIFile.WriteFloat(Item.Section, Item.Key, Item.Value.AsExtended);
      end;
    end;
  finally
    INIFile.Free;
  end;
end;

procedure TConfigManager.LoadFromJSON;
var
  JSONStr: string;
  JSONObj: TJSONObject;
  Section, Key: string;
  SectionObj: TJSONObject;
  Pair: TJSONPair;
  InnerPair: TJSONPair;
  Val: TValue;
begin
  if not FileExists(FJSONFile) then
    Exit;

  JSONStr := TFile.ReadAllText(FJSONFile, TEncoding.UTF8);
  JSONObj := TJSONObject.ParseJSONValue(JSONStr) as TJSONObject;
  if JSONObj = nil then
    Exit;

  try
    for Pair in JSONObj do
    begin
      Section := Pair.JsonString.Value;
      if Pair.JsonValue is TJSONObject then
      begin
        SectionObj := Pair.JsonValue as TJSONObject;
        for InnerPair in SectionObj do
        begin
          Key := InnerPair.JsonString.Value;
          Val := TValue.From(InnerPair.JsonValue.Value);
          FConfigItems.AddOrSetValue(GetFullKey(Section, Key),
            TConfigItem.Create(Key, Section, Val));
        end;
      end;
    end;
  finally
    JSONObj.Free;
  end;
end;

procedure TConfigManager.SaveToJSON;
var
  JSONObj: TJSONObject;
  SectionObj: TJSONObject;
  Item: TConfigItem;
  FullKey: string;
  Sections: TDictionary<string, TJSONObject>;
begin
  if FIsReadOnly then Exit;

  JSONObj := TJSONObject.Create;
  Sections := TDictionary<string, TJSONObject>.Create;
  try
    for FullKey in FConfigItems.Keys do
    begin
      Item := FConfigItems[FullKey];
      if not Sections.TryGetValue(Item.Section, SectionObj) then
      begin
        SectionObj := TJSONObject.Create;
        Sections.Add(Item.Section, SectionObj);
        JSONObj.AddPair(Item.Section, SectionObj);
      end;

      case Item.ValueType of
        cvString:
          SectionObj.AddPair(Item.Key, Item.Value.AsString);
        cvInteger:
          SectionObj.AddPair(Item.Key, TJSONNumber.Create(Item.Value.AsInteger));
        cvBoolean:
          SectionObj.AddPair(Item.Key, TJSONBool.Create(Item.Value.AsBoolean));
        cvFloat:
          SectionObj.AddPair(Item.Key, TJSONNumber.Create(Item.Value.AsExtended));
        cvArray, cvObject:
          SectionObj.AddPair(Item.Key, Item.Value.AsString);
      end;
    end;
    TFile.WriteAllText(FJSONFile, JSONObj.Format(2), TEncoding.UTF8);
  finally
    JSONObj.Free;
    Sections.Free;
  end;
end;

procedure TConfigManager.Load;
begin
  FConfigItems.Clear;
  if FileExists(FConfigFile) then
    LoadFromINI
  else if FileExists(FJSONFile) then
    LoadFromJSON;
end;

procedure TConfigManager.Save;
begin
  if FIsReadOnly then Exit;

  if EndsText('.ini', LowerCase(FConfigFile)) then
    SaveToINI
  else
    SaveToJSON;
end;

function TConfigManager.GetString(const Section, Key, Default: string): string;
var
  FullKey: string;
  Val: TValue;
begin
  FullKey := GetFullKey(Section, Key);
  Val := GetConfigValue(FullKey, TValue.From(Default));
  Result := Val.AsString;
end;

function TConfigManager.GetInteger(const Section, Key: string; Default: Integer): Integer;
var
  FullKey: string;
  Val: TValue;
begin
  FullKey := GetFullKey(Section, Key);
  Val := GetConfigValue(FullKey, TValue.From(Default));
  Result := Val.AsInteger;
end;

function TConfigManager.GetBoolean(const Section, Key: string; Default: Boolean): Boolean;
var
  FullKey: string;
  Val: TValue;
begin
  FullKey := GetFullKey(Section, Key);
  Val := GetConfigValue(FullKey, TValue.From(Default));
  Result := Val.AsBoolean;
end;

function TConfigManager.GetFloat(const Section, Key: string; Default: Double): Double;
var
  FullKey: string;
  Val: TValue;
begin
  FullKey := GetFullKey(Section, Key);
  Val := GetConfigValue(FullKey, TValue.From(Default));
  Result := Val.AsExtended;
end;

function TConfigManager.GetArray(const Section, Key: string; Default: TArray<string>): TArray<string>;
var
  FullKey: string;
  Val: TValue;
  JSONStr: string;
  JSONArray: TJSONArray;
  I: Integer;
begin
  FullKey := GetFullKey(Section, Key);
  Val := GetConfigValue(FullKey, TValue.From('[]'));
  JSONStr := Val.AsString;

  JSONArray := TJSONArray.ParseJSONValue(JSONStr) as TJSONArray;
  if JSONArray = nil then
  begin
    Result := Default;
    Exit;
  end;

  try
    SetLength(Result, JSONArray.Count);
    for I := 0 to JSONArray.Count - 1 do
      Result[I] := JSONArray.Items[I].Value;
  finally
    JSONArray.Free;
  end;
end;

function TConfigManager.GetObject(const Section, Key: string; Default: TJSONObject): TJSONObject;
var
  FullKey: string;
  Val: TValue;
  JSONStr: string;
begin
  FullKey := GetFullKey(Section, Key);
  Val := GetConfigValue(FullKey, TValue.From('{}'));
  JSONStr := Val.AsString;

  Result := TJSONObject.ParseJSONValue(JSONStr) as TJSONObject;
  if Result = nil then
    Result := Default;
end;

procedure TConfigManager.SetString(const Section, Key, Value: string);
var
  FullKey: string;
  Item: TConfigItem;
begin
  FullKey := GetFullKey(Section, Key);
  Item := TConfigItem.Create(Key, Section, TValue.From(Value));
  FConfigItems.AddOrSetValue(FullKey, Item);
  if FAutoSave then Save;
end;

procedure TConfigManager.SetInteger(const Section, Key: string; Value: Integer);
var
  FullKey: string;
  Item: TConfigItem;
begin
  FullKey := GetFullKey(Section, Key);
  Item := TConfigItem.Create(Key, Section, TValue.From(Value));
  FConfigItems.AddOrSetValue(FullKey, Item);
  if FAutoSave then Save;
end;

procedure TConfigManager.SetBoolean(const Section, Key: string; Value: Boolean);
var
  FullKey: string;
  Item: TConfigItem;
begin
  FullKey := GetFullKey(Section, Key);
  Item := TConfigItem.Create(Key, Section, TValue.From(Value));
  FConfigItems.AddOrSetValue(FullKey, Item);
  if FAutoSave then Save;
end;

procedure TConfigManager.SetFloat(const Section, Key: string; Value: Double);
var
  FullKey: string;
  Item: TConfigItem;
begin
  FullKey := GetFullKey(Section, Key);
  Item := TConfigItem.Create(Key, Section, TValue.From(Value));
  FConfigItems.AddOrSetValue(FullKey, Item);
  if FAutoSave then Save;
end;

procedure TConfigManager.SetArray(const Section, Key: string; Value: TArray<string>);
var
  FullKey: string;
  Item: TConfigItem;
  JSONArray: TJSONArray;
  I: Integer;
begin
  FullKey := GetFullKey(Section, Key);
  JSONArray := TJSONArray.Create;
  try
    for I := Low(Value) to High(Value) do
      JSONArray.Add(Value[I]);
    Item := TConfigItem.Create(Key, Section, TValue.From(JSONArray.ToJSON));
  finally
    JSONArray.Free;
  end;
  FConfigItems.AddOrSetValue(FullKey, Item);
  if FAutoSave then Save;
end;

procedure TConfigManager.SetObject(const Section, Key: string; Value: TJSONObject);
var
  FullKey: string;
  Item: TConfigItem;
  JSONStr: string;
begin
  FullKey := GetFullKey(Section, Key);
  if Value = nil then
    JSONStr := '{}'
  else
    JSONStr := Value.ToJSON;
  Item := TConfigItem.Create(Key, Section, TValue.From(JSONStr));
  FConfigItems.AddOrSetValue(FullKey, Item);
  if FAutoSave then Save;
end;

procedure TConfigManager.AddConfigItem(const Item: TConfigItem);
var
  FullKey: string;
begin
  FullKey := GetFullKey(Item.Section, Item.Key);
  FConfigItems.AddOrSetValue(FullKey, Item);
  if FAutoSave then Save;
end;

function TConfigManager.HasKey(const Section, Key: string): Boolean;
begin
  Result := FConfigItems.ContainsKey(GetFullKey(Section, Key));
end;

procedure TConfigManager.RemoveKey(const Section, Key: string);
begin
  FConfigItems.Remove(GetFullKey(Section, Key));
  if FAutoSave then Save;
end;

procedure TConfigManager.Clear;
begin
  FConfigItems.Clear;
  if FAutoSave then Save;
end;

function TConfigManager.GetAllKeys(const Section: string): TArray<string>;
var
  FullKey: string;
  Item: TConfigItem;
  List: TList<string>;
begin
  List := TList<string>.Create;
  try
    for FullKey in FConfigItems.Keys do
    begin
      Item := FConfigItems[FullKey];
      if SameText(Item.Section, Section) then
        List.Add(Item.Key);
    end;
    Result := List.ToArray;
  finally
    List.Free;
  end;
end;

{ TAppConfig }

constructor TAppConfig.Create;
var
  ConfigPath: string;
begin
  inherited Create;
  ConfigPath := ExtractFilePath(ParamStr(0)) + 'config.ini';
  FConfigManager := TConfigManager.Create(ConfigPath);

  // 自动初始化默认配置
  if not FConfigManager.HasKey('Network', 'ServerURL') then
    FConfigManager.SetString('Network', 'ServerURL', 'http://192.168.0.150:8080');
  if not FConfigManager.HasKey('Network', 'ServerPort') then
    FConfigManager.SetInteger('Network', 'ServerPort', 8080);
  if not FConfigManager.HasKey('Network', 'Timeout') then
    FConfigManager.SetInteger('Network', 'Timeout', 30000);
  if not FConfigManager.HasKey('Network', 'RetryCount') then
    FConfigManager.SetInteger('Network', 'RetryCount', 3);
  if not FConfigManager.HasKey('Device', 'PLCHost') then
    FConfigManager.SetString('Device', 'PLCHost', '192.168.1.100');
  if not FConfigManager.HasKey('Device', 'PLCPort') then
    FConfigManager.SetInteger('Device', 'PLCPort', 502);
  if not FConfigManager.HasKey('Device', 'SerialPort') then
    FConfigManager.SetString('Device', 'SerialPort', 'COM1');
  if not FConfigManager.HasKey('Device', 'BaudRate') then
    FConfigManager.SetInteger('Device', 'BaudRate', 9600);
  if not FConfigManager.HasKey('Business', 'BatchSize') then
    FConfigManager.SetInteger('Business', 'BatchSize', 100);
  if not FConfigManager.HasKey('Business', 'AutoSave') then
    FConfigManager.SetBoolean('Business', 'AutoSave', True);
  if not FConfigManager.HasKey('Business', 'LogLevel') then
    FConfigManager.SetInteger('Business', 'LogLevel', 2);
  if not FConfigManager.HasKey('FileServer', 'FileServerPath') then
    FConfigManager.SetString('FileServer', 'FileServerPath', '\\192.168.0.250\DataSava');
  if not FConfigManager.HasKey('FileServer', 'BackupServerPath') then
    FConfigManager.SetString('FileServer', 'BackupServerPath', '\\192.168.0.250\Backup');
  if not FConfigManager.HasKey('Sync', 'SyncInterval') then
    FConfigManager.SetInteger('Sync', 'SyncInterval', 60000);
  if not FConfigManager.HasKey('Sync', 'MaxRetryCount') then
    FConfigManager.SetInteger('Sync', 'MaxRetryCount', 5);
  if not FConfigManager.HasKey('Log', 'LogFileDir') then
    FConfigManager.SetString('Log', 'LogFileDir', ExtractFilePath(ParamStr(0)) + 'log');
  if not FConfigManager.HasKey('Log', 'LogFileMaxSize') then
    FConfigManager.SetInteger('Log', 'LogFileMaxSize', 10485760);
  if not FConfigManager.HasKey('Network', 'CORSOrigin') then
    FConfigManager.SetString('Network', 'CORSOrigin', '*');
  if not FConfigManager.HasKey('Network', 'APIPath') then
    FConfigManager.SetString('Network', 'APIPath', '/prod-api');
  if not FConfigManager.HasKey('Network', 'AdminAPIPath') then
    FConfigManager.SetString('Network', 'AdminAPIPath', '/admin-api');
end;

destructor TAppConfig.Destroy;
begin
  FConfigManager.Free;
  inherited;
end;

function TAppConfig.GetServerURL: string;
begin
  Result := FConfigManager.GetString('Network', 'ServerURL', 'http://192.168.0.150:8080');
end;

function TAppConfig.GetServerPort: Integer;
begin
  Result := FConfigManager.GetInteger('Network', 'ServerPort', 8080);
end;

function TAppConfig.GetTimeout: Integer;
begin
  Result := FConfigManager.GetInteger('Network', 'Timeout', 30000);
end;

function TAppConfig.GetRetryCount: Integer;
begin
  Result := FConfigManager.GetInteger('Network', 'RetryCount', 3);
end;

function TAppConfig.GetPLCHost: string;
begin
  Result := FConfigManager.GetString('Device', 'PLCHost', '192.168.1.100');
end;

function TAppConfig.GetPLCPort: Integer;
begin
  Result := FConfigManager.GetInteger('Device', 'PLCPort', 502);
end;

function TAppConfig.GetSerialPort: string;
begin
  Result := FConfigManager.GetString('Device', 'SerialPort', 'COM1');
end;

function TAppConfig.GetBaudRate: Integer;
begin
  Result := FConfigManager.GetInteger('Device', 'BaudRate', 9600);
end;

function TAppConfig.GetBatchSize: Integer;
begin
  Result := FConfigManager.GetInteger('Business', 'BatchSize', 100);
end;

function TAppConfig.GetAutoSave: Boolean;
begin
  Result := FConfigManager.GetBoolean('Business', 'AutoSave', True);
end;

function TAppConfig.GetLogLevel: Integer;
begin
  Result := FConfigManager.GetInteger('Business', 'LogLevel', 2);
end;

function TAppConfig.GetFileServerPath: string;
begin
  Result := FConfigManager.GetString('FileServer', 'FileServerPath', '\\192.168.0.250\DataSava');
end;

function TAppConfig.GetBackupServerPath: string;
begin
  Result := FConfigManager.GetString('FileServer', 'BackupServerPath', '\\192.168.0.250\Backup');
end;

function TAppConfig.GetSyncInterval: Integer;
begin
  Result := FConfigManager.GetInteger('Sync', 'SyncInterval', 60000);
end;

function TAppConfig.GetMaxRetryCount: Integer;
begin
  Result := FConfigManager.GetInteger('Sync', 'MaxRetryCount', 5);
end;

function TAppConfig.GetLogFileDir: string;
begin
  Result := FConfigManager.GetString('Log', 'LogFileDir', ExtractFilePath(ParamStr(0)) + 'log');
end;

function TAppConfig.GetLogFileMaxSize: Integer;
begin
  Result := FConfigManager.GetInteger('Log', 'LogFileMaxSize', 10485760);
end;

function TAppConfig.GetCORSOrigin: string;
begin
  Result := FConfigManager.GetString('Network', 'CORSOrigin', '*');
end;

function TAppConfig.GetAPIPath: string;
begin
  Result := FConfigManager.GetString('Network', 'APIPath', '/prod-api');
end;

function TAppConfig.GetAdminAPIPath: string;
begin
  Result := FConfigManager.GetString('Network', 'AdminAPIPath', '/admin-api');
end;

procedure TAppConfig.Save;
begin
  FConfigManager.Save;
end;

end.