migrated to v15

Sources/Plexswift/internal/extensions/String+ParameterSubstitution.swift

@@ -0,0 +1,37 @@
+// Code generated by Speakeasy (https://speakeasyapi.dev). DO NOT EDIT.
+
+import Foundation
+
+enum StringSubstitutionError: Swift.Error {
+    case `internal`
+    case missingParameter(named: String, in: String)
+}
+
+extension String {
+  typealias SubstitutionHandler = (_ key: String) throws -> String?
+
+  func substituteComponents(using substitutionHandler: SubstitutionHandler) throws -> String {
+      let regex = try NSRegularExpression(pattern: "\\{([^}]+)\\}")
+      let range = NSRange(startIndex..<endIndex, in: self)
+      let matches = regex.matches(in: self, range: range)
+
+      var substitutedPath = self
+      // Reverse matches so that we can replace substrings in place.
+      for match in matches.reversed() {
+          let templateRange = match.range
+          guard let keyRange = Range(match.range(at: 1), in: self) else {
+              throw StringSubstitutionError.internal
+          }
+
+          let key = String(self[keyRange])
+          guard let serializedParameter = try substitutionHandler(key) else {
+              throw StringSubstitutionError.missingParameter(named: key, in: self)
+          }
+
+          let startIndex = substitutedPath.index(substitutedPath.startIndex, offsetBy: templateRange.location)
+          let endIndex = substitutedPath.index(startIndex, offsetBy: templateRange.length)
+          substitutedPath.replaceSubrange(startIndex..<endIndex, with: serializedParameter)
+      }
+      return substitutedPath
+  }
+}