-- ITD Transport Tracking - SQL Server schema
-- Таблици: карти (QR), цикли с 5 поста (дата-час за всеки пост) + служебно затваряне

IF NOT EXISTS (SELECT * FROM sys.tables WHERE name = 'ITD_Cards')
BEGIN
    CREATE TABLE dbo.ITD_Cards (
        Id INT IDENTITY(1,1) NOT NULL PRIMARY KEY,
        Code NVARCHAR(128) NOT NULL UNIQUE,
        DisplayText NVARCHAR(256) NOT NULL,
        IsActive BIT NOT NULL DEFAULT 1,
        CreatedAt DATETIME2 NOT NULL DEFAULT SYSUTCDATETIME(),
        UpdatedAt DATETIME2 NOT NULL DEFAULT SYSUTCDATETIME()
    );
    CREATE INDEX IX_ITD_Cards_Code ON dbo.ITD_Cards(Code);
    CREATE INDEX IX_ITD_Cards_IsActive ON dbo.ITD_Cards(IsActive);
END
GO

IF NOT EXISTS (SELECT * FROM sys.tables WHERE name = 'ITD_Cycles')
BEGIN
    CREATE TABLE dbo.ITD_Cycles (
        Id INT IDENTITY(1,1) NOT NULL PRIMARY KEY,
        CardId INT NOT NULL,
        CycleNo INT NOT NULL,
        Post1At DATETIME2 NOT NULL,
        Post2At DATETIME2 NULL,
        Post3At DATETIME2 NULL,
        Post4At DATETIME2 NULL,
        Post5At DATETIME2 NULL,
        ServiceClosed BIT NOT NULL DEFAULT 0,
        ServiceClosedAt DATETIME2 NULL,
        CONSTRAINT FK_ITD_Cycles_Cards FOREIGN KEY (CardId) REFERENCES dbo.ITD_Cards(Id)
    );
    CREATE INDEX IX_ITD_Cycles_CardId ON dbo.ITD_Cycles(CardId);
    CREATE INDEX IX_ITD_Cycles_Post1At ON dbo.ITD_Cycles(Post1At);
END
GO