#nullable enable
using System.Text.Json.Serialization;

namespace AutopilotMonitor.Shared.Models
{
    /// <summary>
    /// Confidence level for an error-code mapping (catalog schemaVersion 2).
    /// </summary>
    public enum ErrorCodeConfidence
    {
        /// <summary>Carried over from the v1 catalog without a primary source.</summary>
        Low,

        /// <summary>Paraphrase of an enum member name or of an analysis rule's text.</summary>
        Medium,

        /// <summary>Taken from an MS Learn page or from the IME build named in <see cref="ErrorCodeEntry.Source"/>.</summary>
        High,
    }

    /// <summary>
    /// One Windows / MSI / Intune error-code catalog entry. Mirrors the structure of
    /// <c>Resources/error-codes.json</c> (generated by <c>tools/error-codes/generate.mjs</c>)
    /// and the TypeScript <c>ErrorCodeEntry</c> in the web app.
    /// </summary>
    public sealed class ErrorCodeEntry
    {
        [JsonPropertyName("description")]
        public string Description { get; set; } = string.Empty;

        [JsonPropertyName("confidence")]
        public ErrorCodeConfidence Confidence { get; set; }

        /// <summary>
        /// Provenance token: <c>msdoc:&lt;URL&gt;</c>, <c>ime:&lt;version&gt;</c>, <c>winerror.h</c>,
        /// <c>rule:&lt;RULE-ID&gt;</c> or <c>legacy-catalog-v1</c>. Rendered through a formatter, never raw.
        /// </summary>
        [JsonPropertyName("source")]
        public string Source { get; set; } = string.Empty;

        /// <summary>
        /// Family the code belongs to (<c>msi</c>, <c>win32</c>, <c>com</c>, <c>appx</c>, <c>windows-update</c>,
        /// <c>cbs</c>, <c>intune-win32</c>, <c>intune-mobile</c>, <c>mdm-enrollment</c>, <c>autopilot</c>,
        /// <c>entra-join</c>, <c>delivery-optimization</c>). Deliberately a string, not an enum: a value
        /// outside the set must never turn the lazily cached catalog load into a permanent exception.
        /// </summary>
        [JsonPropertyName("category")]
        public string Category { get; set; } = string.Empty;

        /// <summary>Symbolic name (<c>ERROR_INSTALL_FAILURE</c>, <c>WU_E_ALL_UPDATES_FAILED</c>, an IME enum member). Optional.</summary>
        [JsonPropertyName("symbol")]
        public string? Symbol { get; set; }

        /// <summary>True for the MSI return codes the IME retries automatically during the Autopilot ESP.</summary>
        [JsonPropertyName("imeRetriesDuringEsp")]
        public bool ImeRetriesDuringEsp { get; set; }
    }

    /// <summary>One IME app enforcement state (<c>enforcementStates</c> map of the catalog).</summary>
    public sealed class EnforcementStateEntry
    {
        /// <summary>Numeric state as the catalog keys it (<c>"1000"</c>, <c>"6001"</c>).</summary>
        [JsonIgnore]
        public string Value { get; set; } = string.Empty;

        /// <summary>IME enum member name (<c>Success</c>, <c>NotAttemptedDependencyWithFailure</c>).</summary>
        [JsonPropertyName("name")]
        public string Name { get; set; } = string.Empty;

        [JsonPropertyName("description")]
        public string Description { get; set; } = string.Empty;
    }

    /// <summary>
    /// Result of <see cref="Services.ErrorCodeCatalog.TryLookupDetailed"/>: the entry plus the
    /// catalog key it was found under and, when the input was a <c>HRESULT_FROM_WIN32</c> value
    /// that resolved to a decimal MSI entry, the Win32 code it was derived from.
    /// </summary>
    public sealed class ErrorCodeLookupResult
    {
        public ErrorCodeLookupResult(ErrorCodeEntry entry, string key, int? derivedFromWin32)
        {
            Entry = entry;
            Key = key;
            DerivedFromWin32 = derivedFromWin32;
        }

        public ErrorCodeEntry Entry { get; }

        /// <summary>Normalised catalog key that matched (<c>0x80070005</c>, <c>1603</c>).</summary>
        public string Key { get; }

        /// <summary>
        /// Set when a <c>0x8007xxxx</c> input had no direct entry and resolved through its low
        /// 16 bits to a decimal MSI entry (<c>0x80070643</c> → <c>1603</c>). Data for consumers,
        /// never merged into the description.
        /// </summary>
        public int? DerivedFromWin32 { get; }
    }
}