Feat: add Icon schema

proto/icon/v1.proto

@@ -0,0 +1,42 @@
+syntax = "proto3";
+package mapeo;
+
+import "common/v1.proto";
+import "options.proto";
+
+message Icon_1 {
+  // **DO NOT CHANGE dataTypeId** generated with `openssl rand -hex 6`
+  option (dataTypeId) = "97e8cd9f0854";
+  option (schemaName) = "icon";
+
+  Common_1 common = 1;
+  string name = 2 [(required) = true];
+
+  message IconVariant {
+
+    enum Size {
+      small = 0;
+      medium = 1;
+      large = 2;
+    }
+
+    enum PixelDensity {
+      one = 0;
+      two = 1;
+      three = 2;
+    }
+
+    enum MimeType {
+      svg = 0;
+      png = 1;
+    }
+
+    Size size = 1 [(required) = true];
+    PixelDensity pixelDensity = 2 [(required) = true];
+    bytes blobVersionId = 3 [(required) = true];
+    MimeType mimeType = 4 [(required) = true];
+  }
+
+  repeated IconVariant variants = 3;
+
+}

schema/icon/v1.json

@@ -0,0 +1,43 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "http://mapeo.world/schemas/icon/v2.json",
+  "title": "Icon",
+  "description": "An Icon represents metadata to retrieve an Icon blob",
+  "type": "object",
+  "properties": {
+    "schemaName": {
+      "description": "Must be `icon`",
+      "type": "string",
+      "const": "icon"
+    },
+    "name": {
+      "type": "string"
+    },
+    "variants" :{
+      "type": "array",
+      "items": {
+        "type": "object",
+        "properties": {
+          "size": {
+            "type": "string",
+            "enum": ["small", "medium", "large"]
+          },
+          "pixelDensity": {
+            "type": "number",
+            "enum": [1,2,3]
+          },
+          "blobVersionId": {
+            "type": "string"
+          },
+          "mimeType": {
+            "type": "string",
+            "enum": ["image/svg+xml", "image/png"]
+          }
+        },
+        "required": ["size", "pixelDensity", "blobVersionId", "mimeType"]
+      }
+    }
+  },
+  "required": ["schemaName", "name", "variants"],
+  "additionalProperties": false
+}

src/decode.ts

@@ -17,6 +17,7 @@ import {
   convertRole,
   convertDeviceInfo,
   convertCoreOwnership,
+  convertIcon,
 } from './lib/decode-conversions.js'
 // @ts-ignore
 import * as cenc from 'compact-encoding'
@@ -68,6 +69,8 @@ export function decode(
       return convertDeviceInfo(message, versionObj)
     case 'coreOwnership':
       return convertCoreOwnership(message, versionObj)
+    case 'icon':
+      return convertIcon(message, versionObj)
     default:
       const _exhaustiveCheck: never = message
       return message

src/encode.ts

@@ -17,6 +17,7 @@ import {
   convertRole,
   convertDeviceInfo,
   convertCoreOwnership,
+  convertIcon,
 } from './lib/encode-conversions.js'
 import { CoreOwnership } from './index.js'
 
@@ -72,6 +73,11 @@ export function encode(
       protobuf = Encode[mapeoDoc.schemaName](message).finish()
       break
     }
+    case 'icon': {
+      const message = convertIcon(mapeoDoc)
+      protobuf = Encode[mapeoDoc.schemaName](message).finish()
+      break
+    }
     default:
       const _exhaustiveCheck: never = mapeoDoc
       protobuf = _exhaustiveCheck

src/lib/decode-conversions.ts

@@ -4,6 +4,13 @@ import {
   type TagValue_1,
   type TagValue_1_PrimitiveValue,
 } from '../proto/tags/v1.js'
+
+import {
+  type Icon_1_IconVariant,
+  Icon_1_IconVariant_MimeType,
+  Icon_1_IconVariant_PixelDensity,
+} from '../proto/icon/v1.js'
+
 import {
   type MapeoDoc,
   type ProtoTypesWithSchemaInfo,
@@ -187,6 +194,55 @@ export const convertCoreOwnership: ConvertFunction<'coreOwnership'> = (
   }
 }
 
+export const convertIcon: ConvertFunction<'icon'> = (message, versionObj) => {
+  const { common, schemaVersion, ...rest } = message
+  const jsonSchemaCommon = convertCommon(common, versionObj)
+  return {
+    ...jsonSchemaCommon,
+    ...rest,
+    variants: message.variants.map((variant) => convertIconVariant(variant)),
+  }
+}
+
+function convertIconVariant(variant: Icon_1_IconVariant) {
+  const { blobVersionId, mimeType, size, pixelDensity } = variant
+  return {
+    blobVersionId: blobVersionId.toString('hex'),
+    mimeType: convertIconMimeType(mimeType) as ValidMimeTypes,
+    size: size === 'UNRECOGNIZED' ? 'small' : size,
+    pixelDensity: convertIconPixelDensity(pixelDensity),
+  }
+}
+
+function convertIconPixelDensity(
+  pixelDensity: Icon_1_IconVariant_PixelDensity
+): 1 | 2 | 3 {
+  switch (pixelDensity) {
+    case 'one':
+      return 1
+    case 'two':
+      return 2
+    case 'three':
+      return 3
+    default:
+      return 1
+  }
+}
+
+type ValidMimeTypes = 'image/svg+xml' | 'image/png'
+function convertIconMimeType(
+  mimeType: Icon_1_IconVariant_MimeType
+): ValidMimeTypes {
+  switch (mimeType) {
+    case 'svg':
+      return 'image/svg+xml'
+    case 'png':
+      return 'image/png'
+    default:
+      return 'image/svg+xml'
+  }
+}
+
 function convertTags(tags: { [key: string]: TagValue_1 } | undefined): {
   [key: string]: Exclude<JsonTagValue, undefined>
 } {

src/lib/encode-conversions.ts

@@ -10,6 +10,8 @@ import {
   MapeoDocInternal,
 } from '../types.js'
 import { TagValue_1, type TagValue_1_PrimitiveValue } from '../proto/tags/v1.js'
+import { Icon } from '../schema/icon.js'
+import { type Icon_1_IconVariant } from '../proto/icon/v1.js'
 import { Observation_5_Metadata } from '../proto/observation/v5.js'
 import { parseVersionId } from './utils.js'
 import { CoreOwnership } from '../index.js'
@@ -132,6 +134,48 @@ export const convertCoreOwnership = (
   }
 }
 
+export const convertIcon: ConvertFunction<'icon'> = (mapeoDoc) => {
+  const { variants, ...rest } = mapeoDoc
+  return {
+    common: convertCommon(mapeoDoc),
+    ...rest,
+    variants: convertIconVariants(variants),
+  }
+}
+
+function convertIconVariants(variants: Icon['variants']): Icon_1_IconVariant[] {
+  return variants.map((variant) => {
+    const { blobVersionId, mimeType, size, pixelDensity } = variant
+    return {
+      blobVersionId: Buffer.from(blobVersionId, 'hex'),
+      mimeType: convertIconMimeType(mimeType),
+      size,
+      pixelDensity: convertIconPixelDensity(pixelDensity),
+    }
+  })
+}
+function convertIconMimeType(mimeType: 'image/svg+xml' | 'image/png') {
+  switch (mimeType) {
+    case 'image/svg+xml':
+      return 'svg'
+    case 'image/png':
+      return 'png'
+    default:
+      return 'svg'
+  }
+}
+
+function convertIconPixelDensity(pixelDensity: 1 | 2 | 3) {
+  switch (pixelDensity) {
+    case 1:
+      return 'one'
+    case 2:
+      return 'two'
+    case 3:
+      return 'three'
+  }
+}
+
 function convertCommon(
   common: Omit<MapeoCommon, 'versionId'>
 ): ProtoTypesWithSchemaInfo['common'] {

src/types.ts

@@ -15,6 +15,7 @@ type SupportedSchemaNames =
   | 'field'
   | 'preset'
   | 'role'
+  | 'icon'
   | 'deviceInfo'
   | 'coreOwnership'