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Add more info to errors about missing metadata

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Sami Samhuri 2019-12-25 06:08:42 +00:00
parent 2d8fc2cfa3
commit 53c5ca3032
1 changed files with 4 additions and 4 deletions
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8
samhuri.net/Sources/samhuri.net/SiteGenerator/Posts/PostTransformer.swift
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@ -19,7 +19,7 @@ final class PostTransformer {
func makePost(from rawPost: RawPost) throws -> Post {
let result = markdownParser.parse(rawPost.markdown)
let metadata = try parseMetadata(result.metadata)
let metadata = try parseMetadata(result.metadata, slug: rawPost.slug)
let path = pathForPost(date: metadata.date, slug: rawPost.slug)
return Post(
slug: rawPost.slug,
@ -57,15 +57,15 @@ struct ParsedMetadata {
extension PostTransformer {
enum Error: Swift.Error {
case deficientMetadata(missingKeys: [String])
case deficientMetadata(slug: String, missingKeys: [String], metadata: [String: String])
case invalidTimestamp(String)
}
func parseMetadata(_ metadata: [String: String]) throws -> ParsedMetadata {
func parseMetadata(_ metadata: [String: String], slug: String) throws -> ParsedMetadata {
let requiredKeys = ["Title", "Author", "Date", "Timestamp"]
let missingKeys = requiredKeys.filter { metadata[$0] == nil }
guard missingKeys.isEmpty else {
throw Error.deficientMetadata(missingKeys: missingKeys)
throw Error.deficientMetadata(slug: slug, missingKeys: missingKeys, metadata: metadata)
}
guard let timeInterval = TimeInterval(metadata["Timestamp"]!) else {
throw Error.invalidTimestamp(metadata["Timestamp"]!)