public class MedicationCorrelationOptions
{
    public const string SectionName = "MedicationCorrelation";

    /// <summary>Lookback window for medication-vital correlation (minutes).</summary>
    public int CorrelationWindowMinutes { get; set; } = 90;

    /// <summary>
    /// Drug name (lowercase) → observation codes that may be affected.
    /// Keys are normalized to lowercase for case-insensitive lookup.
    /// </summary>
    public Dictionary<string, string[]> DrugVitalMappings { get; set; } = new()
    {
        // Beta-blockers
        ["metoprolol"]      = new[] { "SYSTOLIC_BP", "HEART_RATE", "DIASTOLIC_BP" },
        ["labetalol"]       = new[] { "SYSTOLIC_BP", "HEART_RATE", "DIASTOLIC_BP" },
        ["atenolol"]        = new[] { "SYSTOLIC_BP", "HEART_RATE", "DIASTOLIC_BP" },
        ["propranolol"]     = new[] { "SYSTOLIC_BP", "HEART_RATE", "DIASTOLIC_BP" },
        ["esmolol"]         = new[] { "SYSTOLIC_BP", "HEART_RATE", "DIASTOLIC_BP" },
        ["carvedilol"]      = new[] { "SYSTOLIC_BP", "HEART_RATE", "DIASTOLIC_BP" },

        // Vasopressors / inotropes
        ["norepinephrine"]  = new[] { "SYSTOLIC_BP", "DIASTOLIC_BP", "HEART_RATE" },
        ["epinephrine"]     = new[] { "SYSTOLIC_BP", "DIASTOLIC_BP", "HEART_RATE", "GLUCOSE_MG_DL" },
        ["vasopressin"]     = new[] { "SYSTOLIC_BP", "DIASTOLIC_BP" },
        ["dopamine"]        = new[] { "SYSTOLIC_BP", "DIASTOLIC_BP", "HEART_RATE" },
        ["dobutamine"]      = new[] { "SYSTOLIC_BP", "HEART_RATE" },
        ["phenylephrine"]   = new[] { "SYSTOLIC_BP", "DIASTOLIC_BP", "HEART_RATE" },

        // Calcium channel blockers
        ["diltiazem"]       = new[] { "HEART_RATE", "SYSTOLIC_BP", "DIASTOLIC_BP" },
        ["verapamil"]       = new[] { "HEART_RATE", "SYSTOLIC_BP", "DIASTOLIC_BP" },
        ["amlodipine"]      = new[] { "SYSTOLIC_BP", "DIASTOLIC_BP" },
        ["nicardipine"]     = new[] { "SYSTOLIC_BP", "DIASTOLIC_BP", "HEART_RATE" },

        // Antihypertensives
        ["nitroglycerin"]   = new[] { "SYSTOLIC_BP", "DIASTOLIC_BP", "HEART_RATE" },
        ["nitroprusside"]   = new[] { "SYSTOLIC_BP", "DIASTOLIC_BP", "HEART_RATE" },
        ["hydralazine"]     = new[] { "SYSTOLIC_BP", "DIASTOLIC_BP", "HEART_RATE" },

        // Opioids
        ["morphine"]        = new[] { "RESP_RATE", "SPO2", "SYSTOLIC_BP", "HEART_RATE" },
        ["fentanyl"]        = new[] { "RESP_RATE", "SPO2", "HEART_RATE" },
        ["hydromorphone"]   = new[] { "RESP_RATE", "SPO2", "SYSTOLIC_BP" },
        ["remifentanil"]    = new[] { "RESP_RATE", "SPO2", "HEART_RATE" },

        // Sedatives / anaesthetics
        ["propofol"]        = new[] { "RESP_RATE", "SPO2", "SYSTOLIC_BP", "HEART_RATE" },
        ["midazolam"]       = new[] { "RESP_RATE", "SPO2" },
        ["lorazepam"]       = new[] { "RESP_RATE", "SPO2" },
        ["ketamine"]        = new[] { "HEART_RATE", "SYSTOLIC_BP", "RESP_RATE" },

        // Antiarrhythmics
        ["amiodarone"]      = new[] { "HEART_RATE", "SYSTOLIC_BP" },
        ["adenosine"]       = new[] { "HEART_RATE" },
        ["digoxin"]         = new[] { "HEART_RATE" },
        ["atropine"]        = new[] { "HEART_RATE" },

        // Anticoagulants
        ["heparin"]         = new[] { "HEART_RATE" },

        // Antipyretics
        ["acetaminophen"]   = new[] { "TEMP_C" },
        ["ibuprofen"]       = new[] { "TEMP_C" },

        // Glucose management
        ["insulin"]         = new[] { "GLUCOSE_MG_DL" },
        ["dextrose"]        = new[] { "GLUCOSE_MG_DL" },
        ["glucagon"]        = new[] { "GLUCOSE_MG_DL" },

        // Corticosteroids
        ["dexamethasone"]       = new[] { "GLUCOSE_MG_DL", "TEMP_C" },
        ["methylprednisolone"]  = new[] { "GLUCOSE_MG_DL", "TEMP_C" },
        ["hydrocortisone"]      = new[] { "GLUCOSE_MG_DL", "TEMP_C" },
        ["prednisone"]          = new[] { "GLUCOSE_MG_DL", "TEMP_C" },

        // Diuretics
        ["furosemide"]      = new[] { "SYSTOLIC_BP", "DIASTOLIC_BP" },

        // Bronchodilators
        ["albuterol"]       = new[] { "HEART_RATE", "SPO2" }
    };
}