shoc-backend/SeaHaven.DataServices/Helpers/WorkOrderBoardRegions.cs

namespace SeaHaven.DataServices.Helpers
{
    public static class WorkOrderBoardRegions
    {
        public static readonly IReadOnlyList<string> Names =
            ["East", "Central", "West", "California", "Unmapped/Other"];

        private static readonly IReadOnlyDictionary<string, string[]> RegionStateCodes =
            new Dictionary<string, string[]>(StringComparer.Ordinal)
            {
                ["East"] = ["CT", "DE", "GA", "ME", "MD", "MA", "NH", "NJ", "NY", "NC", "PA", "RI", "SC", "VT", "VA", "WV"],
                ["Central"] = ["AL", "AR", "FL", "IL", "IN", "IA", "KS", "KY", "LA", "MI", "MN", "MS", "MO", "NE", "ND", "OH", "OK", "SD", "TN", "WI"],
                ["West"] = ["AK", "AZ", "CO", "HI", "ID", "MT", "NV", "NM", "OR", "TX", "UT", "WA", "WY"],
                ["California"] = ["CA"]
            };

        private static readonly IReadOnlyDictionary<string, string> StateNames =
            new Dictionary<string, string>(StringComparer.Ordinal)
            {
                ["AL"] = "ALABAMA", ["AK"] = "ALASKA", ["AZ"] = "ARIZONA", ["AR"] = "ARKANSAS",
                ["CA"] = "CALIFORNIA", ["CO"] = "COLORADO", ["CT"] = "CONNECTICUT", ["DE"] = "DELAWARE",
                ["FL"] = "FLORIDA", ["GA"] = "GEORGIA", ["HI"] = "HAWAII", ["ID"] = "IDAHO",
                ["IL"] = "ILLINOIS", ["IN"] = "INDIANA", ["IA"] = "IOWA", ["KS"] = "KANSAS",
                ["KY"] = "KENTUCKY", ["LA"] = "LOUISIANA", ["ME"] = "MAINE", ["MD"] = "MARYLAND",
                ["MA"] = "MASSACHUSETTS", ["MI"] = "MICHIGAN", ["MN"] = "MINNESOTA", ["MS"] = "MISSISSIPPI",
                ["MO"] = "MISSOURI", ["MT"] = "MONTANA", ["NE"] = "NEBRASKA", ["NV"] = "NEVADA",
                ["NH"] = "NEW HAMPSHIRE", ["NJ"] = "NEW JERSEY", ["NM"] = "NEW MEXICO", ["NY"] = "NEW YORK",
                ["NC"] = "NORTH CAROLINA", ["ND"] = "NORTH DAKOTA", ["OH"] = "OHIO", ["OK"] = "OKLAHOMA",
                ["OR"] = "OREGON", ["PA"] = "PENNSYLVANIA", ["RI"] = "RHODE ISLAND", ["SC"] = "SOUTH CAROLINA",
                ["SD"] = "SOUTH DAKOTA", ["TN"] = "TENNESSEE", ["TX"] = "TEXAS", ["UT"] = "UTAH",
                ["VT"] = "VERMONT", ["VA"] = "VIRGINIA", ["WA"] = "WASHINGTON", ["WV"] = "WEST VIRGINIA",
                ["WI"] = "WISCONSIN", ["WY"] = "WYOMING"
            };

        public static IReadOnlyCollection<string> StorageValuesFor(string region)
            => RegionStateCodes.TryGetValue(region, out var codes)
                ? codes.SelectMany(code => new[] { code, StateNames[code] }).ToArray()
                : Array.Empty<string>();

        public static IReadOnlySet<string> KnownStorageValues { get; } =
            RegionStateCodes.Values
                .SelectMany(codes => codes.SelectMany(code => new[] { code, StateNames[code] }))
                .ToHashSet(StringComparer.Ordinal);
    }
}