1 files changed, 63 insertions, 0 deletions
diff --git a/src/SMAPI/Framework/Models/ModDataRecord.cs b/src/SMAPI/Framework/Models/ModDataRecord.cs
new file mode 100644
index 00000000..c6a12188
--- /dev/null
+++ b/src/SMAPI/Framework/Models/ModDataRecord.cs
@@ -0,0 +1,63 @@
+using System.Collections.Generic;
+using System.Linq;
+using Newtonsoft.Json;
+using StardewModdingAPI.Framework.Serialisation;
+
+namespace StardewModdingAPI.Framework.Models
+{
+    /// <summary>Metadata about a mod from SMAPI's internal data.</summary>
+    internal class ModDataRecord
+    {
+        /*********
+        ** Accessors
+        *********/
+        /// <summary>The unique mod identifier.</summary>
+        [JsonConverter(typeof(SFieldConverter))]
+        public ModDataID ID { get; set; }
+
+        /// <summary>A value to inject into <see cref="IManifest.UpdateKeys"/> field if it's not already set.</summary>
+        public string[] UpdateKeys { get; set; }
+
+        /// <summary>The URL where the player can get an unofficial or alternative version of the mod if the official version isn't compatible.</summary>
+        public string AlternativeUrl { get; set; }
+
+        /// <summary>The compatibility of given mod versions (if any).</summary>
+        [JsonConverter(typeof(SFieldConverter))]
+        public ModCompatibility[] Compatibility { get; set; } = new ModCompatibility[0];
+
+        /// <summary>Map local versions to a semantic version for update checks.</summary>
+        public IDictionary<string, string> MapLocalVersions { get; set; } = new Dictionary<string, string>();
+
+        /// <summary>Map remote versions to a semantic version for update checks.</summary>
+        public IDictionary<string, string> MapRemoteVersions { get; set; } = new Dictionary<string, string>();
+
+
+        /*********
+        ** Public methods
+        *********/
+        /// <summary>Get the compatibility record for a given version, if any.</summary>
+        /// <param name="version">The mod version to check.</param>
+        public ModCompatibility GetCompatibility(ISemanticVersion version)
+        {
+            return this.Compatibility.FirstOrDefault(p => p.MatchesVersion(version));
+        }
+
+        /// <summary>Get a semantic local version for update checks.</summary>
+        /// <param name="version">The local version to normalise.</param>
+        public string GetLocalVersionForUpdateChecks(string version)
+        {
+            return this.MapLocalVersions != null && this.MapLocalVersions.TryGetValue(version, out string newVersion)
+                ? newVersion
+                : version;
+        }
+
+        /// <summary>Get a semantic remote version for update checks.</summary>
+        /// <param name="version">The remote version to normalise.</param>
+        public string GetRemoteVersionForUpdateChecks(string version)
+        {
+            return this.MapRemoteVersions != null && this.MapRemoteVersions.TryGetValue(version, out string newVersion)
+                ? newVersion
+                : version;
+        }
+    }
+}