Support decoding [Date]

jegnux · Mar 3, 2021 · 674f409 · 674f409
1 parent ed2854f
commit 674f409
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Showing 5 changed files with 44 additions and 9 deletions.
diff --git a/Sources/BackedCodable/Backed+Init.swift b/Sources/BackedCodable/Backed+Init.swift
@@ -41,4 +41,12 @@ extension Backed {
     public convenience init(_ path: Path? = nil, defaultValue: Value = nil, options: BackingDecoderOptions = [], strategy: DateDecodingStrategy) where Value == Date? {
         self.init(path, defaultValue: defaultValue, options: options, decoder: .date(strategy: strategy))
     }
+
+    public convenience init(_ path: Path? = nil, defaultValue: Value? = nil, options: BackingDecoderOptions = [], strategy: DateDecodingStrategy) where Value == [Date] {
+        self.init(path, defaultValue: defaultValue, options: options, decoder: .dates(strategy: strategy))
+    }
+
+    public convenience init(_ path: Path? = nil, defaultValue: Value = nil, options: BackingDecoderOptions = [], strategy: DateDecodingStrategy) where Value == [Date]? {
+        self.init(path, defaultValue: defaultValue, options: options, decoder: .dates(strategy: strategy))
+    }
 }
diff --git a/Sources/BackedCodable/Decoders/DateDecoder.swift b/Sources/BackedCodable/Decoders/DateDecoder.swift
@@ -56,18 +56,35 @@ public struct DateDecodingStrategy {
     }
 }
 
-enum DateDecoder {
-    static func decode(from decoder: Decoder, context: BackingDecoderContext, strategy: DateDecodingStrategy) throws -> Date {
-        try decoder.decode(at: context.path, options: context.options) { decoder in
-            try strategy.decode(from: decoder)
-        }
-    }
-}
-
 extension BackingDecoder {
     static func date(strategy: DateDecodingStrategy) -> BackingDecoder<Date> {
         BackingDecoder<Date> { (decoder, context) -> Date in
-            try DateDecoder.decode(from: decoder, context: context, strategy: strategy)
+            try decoder.decode(at: context.path, options: context.options) { decoder in
+                try strategy.decode(from: decoder)
+            }
+        }
+    }
+
+    static func dates(strategy: DateDecodingStrategy) -> BackingDecoder<[Date]> {
+        BackingDecoder<[Date]> { (decoder, context) -> [Date] in
+            try decoder.decode(at: context.path, options: context.options) { pathDecoder in
+                let container = try pathDecoder.unkeyedContainer()
+                var dates: [Date] = []
+                for i in 0 ..< (container.count ?? 0) {
+                    do {
+                        dates.append(
+                            try decoder.decode(at: context.path[i], options: context.options) { pathDecoder in
+                                try strategy.decode(from: pathDecoder)
+                            }
+                        )
+                    } catch {
+                        if context.options.contains(.lossy) == false {
+                            throw error
+                        }
+                    }
+                }
+                return dates
+            }
         }
     }
 }
diff --git a/Stubs/BackedStub.swift b/Stubs/BackedStub.swift
@@ -14,6 +14,7 @@ public struct BackedStub: BackedDecodable, Equatable {
         name: String,
         startDate: Date,
         endDate: Date,
+        dates: [Date],
         values: [String],
         nestedValues: [String],
         nestedInteger: Int,
@@ -29,6 +30,7 @@ public struct BackedStub: BackedDecodable, Equatable {
         self._name = Backed(name)
         self._startDate = Backed(startDate)
         self._endDate = Backed(endDate)
+        self._dates = Backed(dates)
         self._values = Backed(values)
         self._nestedValues = Backed(nestedValues)
         self._nestedInteger = Backed(nestedInteger)
@@ -63,6 +65,9 @@ public struct BackedStub: BackedDecodable, Equatable {
     @Backed(Path.end_date, strategy: .secondsSince1970)
     public var endDate: Date
 
+    @Backed(Path.end_date, options: .lossy, strategy: .secondsSince1970)
+    public var dates: [Date]
+
     @Backed(Path.values, defaultValue: [], options: .lossy)
     public var values: [String]
 

diff --git a/Stubs/Helpers.swift b/Stubs/Helpers.swift
@@ -25,6 +25,7 @@ public var jsonStub: Data {
         "name": "Steve",
         "start_date": 1613984296000,
         "end_date": 1613984996,
+        "dates": [1613984296, "N/A", 1613984996],
         "values": [12, "34", 56, "78"],
         "attributes": {
             "values": ["12", 34, "56", 78],

diff --git a/Tests/BackedCodableTests/BackedCodableTests.swift b/Tests/BackedCodableTests/BackedCodableTests.swift
@@ -21,6 +21,10 @@ final class BackedCodableTests: XCTestCase {
                 name: "Steve",
                 startDate: Date(timeIntervalSince1970: 1_613_984_296),
                 endDate: Date(timeIntervalSince1970: 1_613_984_996),
+                dates: [
+                    Date(timeIntervalSince1970: 1_613_984_296),
+                    Date(timeIntervalSince1970: 1_613_984_996),
+                ],
                 values: ["34", "78"],
                 nestedValues: ["12", "56"],
                 nestedInteger: 34,