1- using DynamicContentUpdater . Entities ;
1+ #nullable enable
2+ using DynamicContentUpdater . Entities ;
23using DynamicContentUpdater . Utilities ;
34
45using ProgrammerAl . Site . DynamicContentUpdater ;
5- using ProgrammerAl . Site . Pages ;
66
77using System ;
88using System . Collections . Generic ;
99using System . Collections . Immutable ;
1010using System . Collections . ObjectModel ;
1111using System . Text ;
1212
13+ using YamlDotNet . Serialization . NamingConventions ;
14+ using YamlDotNet . Serialization ;
15+ using ExCSS ;
16+ using System . Linq ;
17+
1318namespace DynamicContentUpdater
1419{
1520 public class PostParser
@@ -23,59 +28,96 @@ public PostParser(RuntimeConfig runtimeConfig)
2328
2429 public ParsedEntry ParseFromMarkdown ( string rawEntry , string postName )
2530 {
26- //Assumes a specific schema
27- // Line 1: Title: <TITLE HERE>
28- // Line 2: Published: <YYYY/MM/DD>
29- // Line 3: Tags:
30- // Line 4-??: - <Tag Name>
31- // Line ??: PresentationSlides:
32- // Line ??-??: - <Slide Url>
33- // Header Ending: --- <Yes, 3 dashes>
34- // ## <Some header. Usually "## Receiving the Quest">
35- // First Paragraph
36- // Rest of it: The blog post
37-
38- int titleStartIndex = rawEntry . IndexOf ( "Title:" ) ;
39- int titleEndIndex = rawEntry . IndexOf ( "\n " , titleStartIndex ) ;
40- int titleLineLength = titleEndIndex - titleStartIndex ;
41- ReadOnlySpan < char > titleLine = rawEntry . AsSpan ( titleStartIndex , titleLineLength ) ;
42- string title = ParseStringValueFromLine ( titleLine ) ;
43-
44- int publishedDateStartIndex = rawEntry . IndexOf ( "Published:" ) ;
45- int publishedDateEndIndex = rawEntry . IndexOf ( '\n ' , publishedDateStartIndex + 1 ) ;
46- int publishedDateEndLength = publishedDateEndIndex - publishedDateStartIndex ;
47- ReadOnlySpan < char > publishedDateLine = rawEntry . AsSpan ( publishedDateStartIndex , publishedDateEndLength ) ;
48- DateOnly publishedDate = ParseDateTimeFromLine ( publishedDateLine ) ;
49-
50- int tagsLineStartIndex = rawEntry . IndexOf ( "Tags:" ) ;
51- var tags = ParseListSection ( rawEntry , tagsLineStartIndex ) ;
52-
53- int slidesLineStartIndex = rawEntry . IndexOf ( "Slides:" ) ;
54- ImmutableArray < string > slideUrls ;
55- if ( slidesLineStartIndex == - 1 )
56- {
57- slideUrls = ImmutableArray < string > . Empty ;
58- }
59- else
60- {
61- slideUrls = ParseListSection ( rawEntry , slidesLineStartIndex ) ;
62- }
31+ var deserializer = new DeserializerBuilder ( )
32+ . WithNamingConvention ( PascalCaseNamingConvention . Instance )
33+ . Build ( ) ;
34+
35+ int headerEndIndex = rawEntry . IndexOf ( "---" ) ;
36+ var headerText = rawEntry . Substring ( 0 , headerEndIndex ) ;
37+
38+ var properties = deserializer . Deserialize < PostPropertiesDto > ( headerText ) ;
39+ AssertProperties ( properties ) ;
40+
41+ var tags = properties ! . Tags ! . Select ( x => x ! ) . ToImmutableArray ( ) ;
42+ var presentations = properties . Presentations ! . Select ( x => new ParsedEntry . PresentationEntry ( x ! . Id ! . Value , x . SlidesUrl , x . SlideImagesUrl ) ) . ToImmutableArray ( ) ;
6343
64- int headerCloseIndexStart = rawEntry . IndexOf ( "---" ) + 3 ;
65- ReadOnlySpan < char > postSpan = rawEntry . AsSpan ( headerCloseIndexStart + 1 ) . Trim ( ) ;
44+ var postStartIndex = headerEndIndex + 4 ;
45+ ReadOnlySpan < char > postSpan = rawEntry . AsSpan ( postStartIndex ) . Trim ( ) ;
6646 string post = SanitizePost ( postSpan , postName ) ;
6747
6848 string firstParagraphOfPost = GrabFirstParagraphOfPost ( post ) ;
6949
7050 return new ParsedEntry (
71- title ,
72- publishedDate ,
51+ properties . Title ! ,
52+ properties . Published ! . Value ,
7353 tags ,
74- slideUrls ,
54+ presentations ,
7555 post ,
7656 firstParagraphOfPost ) ;
7757 }
7858
59+ private void AssertProperties ( PostPropertiesDto ? properties )
60+ {
61+ if ( properties is null )
62+ {
63+ throw new Exception ( $ "Post properties object is null") ;
64+ }
65+
66+ AssertProperty ( properties . Title , nameof ( properties . Title ) ) ;
67+ AssertProperty ( properties . Published , nameof ( properties . Published ) ) ;
68+ AssertProperty ( properties . Tags , nameof ( properties . Tags ) ) ;
69+
70+ //Presentations is optional
71+ if ( properties . Presentations is object )
72+ {
73+ foreach ( var presentation in properties . Presentations )
74+ {
75+ if ( presentation is null )
76+ {
77+ throw new Exception ( $ "Post presentation is null") ;
78+ }
79+
80+ AssertProperty ( presentation . Id , nameof ( presentation . Id ) ) ;
81+ AssertProperty ( presentation . SlidesUrl , nameof ( presentation . SlidesUrl ) ) ;
82+ AssertProperty ( presentation . SlideImagesUrl , nameof ( presentation . SlideImagesUrl ) ) ;
83+ }
84+ }
85+ }
86+
87+ private void AssertProperty ( string ? value , string name )
88+ {
89+ if ( string . IsNullOrWhiteSpace ( value ) )
90+ {
91+ throw new Exception ( $ "Post property is null or empty: { name } ") ;
92+ }
93+ }
94+
95+ private void AssertProperty ( int ? value , string name )
96+ {
97+ if ( ! value . HasValue
98+ || value . Value == 0 )
99+ {
100+ throw new Exception ( $ "Post property is null or empty: { name } ") ;
101+ }
102+ }
103+
104+ private void AssertProperty ( DateOnly ? value , string name )
105+ {
106+ if ( ! value . HasValue )
107+ {
108+ throw new Exception ( $ "Post property is null or empty: { name } ") ;
109+ }
110+ }
111+
112+ private void AssertProperty ( string ? [ ] ? value , string name )
113+ {
114+ if ( value is null
115+ || value . Any ( x => string . IsNullOrWhiteSpace ( x ) ) )
116+ {
117+ throw new Exception ( $ "Post array property is null has a null or empty item: { name } ") ;
118+ }
119+ }
120+
79121 private string GrabFirstParagraphOfPost ( string post )
80122 {
81123 string headerText = "##" ;
@@ -128,65 +170,20 @@ private string SanitizePost(ReadOnlySpan<char> postSpan, string postName)
128170
129171 return postText ;
130172 }
173+ }
131174
132- private ImmutableArray < string > ParseListSection ( string text , int sectionTitleStartIndex )
133- {
134- var items = new List < string > ( ) ;
135-
136- var endOfLineIndex = text . IndexOf ( '\n ' , sectionTitleStartIndex ) ;
137- var endOfHeaderIndex = text . IndexOf ( "---" ) ;
138-
139- //int startIndex = endOfLineIndex;
140- var nextItemIndex = text . IndexOf ( '-' , endOfLineIndex ) ;
141- while ( nextItemIndex != - 1
142- && nextItemIndex < endOfHeaderIndex )
143- {
144- var startIndex = nextItemIndex ;
145- if ( text [ startIndex ] != '-' )
146- {
147- break ;
148- }
149-
150- startIndex ++ ; //Skip the dash
151- var endIndex = text . IndexOf ( '\n ' , startIndex + 1 ) ;
152-
153- var length = endIndex - startIndex ;
154- var line = text . Substring ( startIndex , length ) . Trim ( ) ;
155-
156- items . Add ( line ) ;
157-
158- nextItemIndex = endIndex + 1 ;
159- }
160-
161- //while ((startIndex = localSpan.IndexOf('-') + 1) > 0)
162- //{
163- // localSpan = localSpan.Slice(startIndex);
164-
165- // int endIndex = localSpan.IndexOf('\n');
166- // string tag = localSpan.Slice(0, endIndex).Trim().ToString();
167- // items.Add(tag);
168- // localSpan = localSpan.Slice(endIndex + 1);
169- //}
170-
171- return items . ToImmutableArray ( ) ;
172- }
173-
174- private string ParseStringValueFromLine ( ReadOnlySpan < char > textLine )
175- {
176- int separatorIndex = textLine . IndexOf ( ':' ) ;
177- if ( separatorIndex > - 1 )
178- {
179- separatorIndex ++ ; //index is first character after the colon
180- return textLine . Slice ( separatorIndex ) . Trim ( ) . ToString ( ) ;
181- }
182-
183- return "Unknown Error" ;
184- }
175+ public class PostPropertiesDto
176+ {
177+ public string ? Title { get ; set ; }
178+ public DateOnly ? Published { get ; set ; }
179+ public string ? [ ] ? Tags { get ; set ; }
180+ public PresentationDto ? [ ] ? Presentations { get ; set ; }
185181
186- private DateOnly ParseDateTimeFromLine ( ReadOnlySpan < char > textLine )
182+ public class PresentationDto
187183 {
188- string dateTimeString = ParseStringValueFromLine ( textLine ) ;
189- return DateOnly . ParseExact ( dateTimeString , format : "yyyy/MM/dd" , provider : null ) ;
184+ public int ? Id { get ; set ; }
185+ public string ? SlidesUrl { get ; set ; }
186+ public string ? SlideImagesUrl { get ; set ; }
190187 }
191188 }
192189}
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