add ability to convert addons/addon files to json

src/api/cfcore.nim

@@ -62,6 +62,20 @@ converter addonFilesFromForgeSvc*(json: JsonNode): seq[CfAddonFile] =
   ## creates addon files from json retrieved by an forgesvc endpoint
   return json.getElems().map(addonFileFromForgeSvc)
 
+converter toJson*(file: CfAddonFile): JsonNode =
+  ## creates json from an addon file
+  result = %* {
+    "id": file.fileId,
+    "displayName": file.name,
+    "releaseType": file.releaseType.ord,
+    "downloadUrl": file.downloadUrl,
+    "gameVersions": file.gameVersions.map((x) => $x),
+    "dependencies": file.dependencies.map((x) => %* {
+      "relationType": RequiredDependencyType,
+      "modId": x
+    })
+  }
+
 converter addonFromForgeSvc*(json: JsonNode): CfAddon =
   ## creates an addon from json retrieved by an forgesvc endpoint
   result = CfAddon()
@@ -83,6 +97,26 @@ converter addonsFromForgeSvc*(json: JsonNode): seq[CfAddon] =
   ## creates addons from json retrieved by an forgesvc endpoint
   result = json.getElems().map(addonFromForgeSvc)
 
+converter toJson*(addon: CfAddon): JsonNode =
+  result = %* {
+    "id": addon.projectId,
+    "name": addon.name,
+    "summary": addon.description,
+    "links": {
+      "websiteUrl": addon.websiteUrl
+    },
+    "authors": addon.authors.map((x) => %* {
+      "name": x
+    }),
+    "downloadCount": addon.downloads,
+    "gamePopularityRank": addon.popularity,
+    "latestFiles": addon.latestFiles.map((x) => x.toJson()),
+    "latestFilesIndexes": addon.gameVersionLatestFiles.map((x) => %* {
+      "gameVersion": x.version.`$`,
+      "fileId": x.fileId
+    })
+  }
+
 proc isFabricCompatible*(file: CfAddonFile): bool =
   ## returns true if `file` is compatible with the fabric loader.
   if "Fabric".Version in file.gameVersions:

tests/api/tcfcore.nim

@@ -0,0 +1,33 @@
+import std/[json, sequtils, sugar]
+import api/cfcore
+import modpack/version
+
+proc initCfAddonFile(fileId: int, name: string, gameVersions: seq[string], releaseType: CfAddonFileReleaseType): CfAddonFile =
+  result = CfAddonFile()
+  result.fileId = fileId
+  result.name = name
+  result.releaseType = releaseType
+  result.downloadUrl = "https://download-here.com/" & name
+  result.gameVersions = gameVersions.map((x) => x.Version)
+
+proc initCfAddon(projectId: int, name: string, gameVersionLatestFiles: seq[tuple[version: Version, fileId: int]]): CfAddon =
+  result = CfAddon()
+  result.projectId = projectId
+  result.name = name
+  result.description = "description"
+  result.websiteUrl = "https://website-url.com/" & name
+  result.authors = @["user1", "user2"]
+  result.downloads = 102039
+  result.popularity = 0.5
+  result.latestFiles = @[]
+  result.gameVersionLatestFiles = gameVersionLatestFiles
+
+block: # AddonFile from/to JSON
+  let addonFile = initCfAddonFile(300, "jei-1.0.2.jar", @["1.16.1", "1.16.2", "Forge"], CfAddonFileReleaseType.Beta)
+
+  doAssert addonFile.toJson.addonFileFromForgeSvc.toJson == addonFile.toJson
+
+block: # Addon from/to JSON
+  let addon = initCfAddon(200, "Just Enough Items (JEI)", @[(version: "1.16".Version, fileId: 2)])
+
+  doAssert addon.toJson.addonFromForgeSvc.toJson == addon.toJson