"
I model a Tiddler object in [TiddlyWiki](https://tiddlywiki.com/).

I implement the standard fields as described in the standard documentation at: <https://tiddlywiki.com/#TiddlerFields>

"
Class {
	#name : #Tiddler,
	#superclass : #Object,
	#instVars : [
		'title',
		'text',
		'modified',
		'created',
		'creator',
		'tags',
		'type',
		'list',
		'caption',
		'modifier',
		'wiki',
		'customFields',
		'bag',
		'revision'
	],
	#category : #'TiddlyWiki-Model'
}

{ #category : #'instance creation' }
Tiddler class >> nowLocal [
	^ ((ZTimestampFormat fromString: '20010203160506700') 
			format: (ZTimestamp fromString: Time nowLocal asDateAndTime asString)) copyFrom: 1 to: 17
]

{ #category : #accessing }
Tiddler >> asDictionary [
	| response |
	response := Dictionary new
		at: 'title' put: self title;
		at: 'text' put: self text;
		at: 'created' put: self created;
		at: 'tags' put: self tags;
		at: 'type' put: self type;
		at: 'creator' put: self creator;
		at: 'modifier' put: self modifier;
		at: 'modified' put: self modified;
		at: 'bag' put: self bag;
		at: 'revision' put: self revision;
		yourself.
	self customFields ifNotEmpty: [
		self customFields keysAndValuesDo: [:k :v |
			response at: k put: v
		]
	].
	^ response
]

{ #category : #converting }
Tiddler >> asJson [
	^ STONJSON toStringPretty: { self asDictionary }
]

{ #category : #converting }
Tiddler >> asJsonString [ 
	^ STONJSON toStringPretty:  self asDictionary 
]

{ #category : #accessing }
Tiddler >> asJsonTempFile [
	^ MarkupFile exportAsFileOn: FileLocator temp / self title, 'json' containing:self asJson 
		
]

{ #category : #accessing }
Tiddler >> asStonStringPretty [
	| output temp |
	temp := self copy.
	temp wiki: nil.
	output := '' writeStream.
	(STON writer on: output)
		newLine: String crlf;	
    	prettyPrint: true;
		keepNewLines: true;
    	nextPut: temp.
	^ output contents
]

{ #category : #accessing }
Tiddler >> bag [
	^ bag
]

{ #category : #accessing }
Tiddler >> bag: aString [
	bag := aString
]

{ #category : #accessing }
Tiddler >> caption [

	^ caption
]

{ #category : #accessing }
Tiddler >> caption: anObject [

	caption := anObject
]

{ #category : #accessing }
Tiddler >> created [

	^ created ifNil: [ created := self class nowLocal ]
]

{ #category : #accessing }
Tiddler >> created: anObject [

	created := anObject
]

{ #category : #accessing }
Tiddler >> createdAsTWFormat [
	(self created beginsWith: 'NaN') ifTrue: [ self created: self class nowLocal].
	^ ((ZTimestampFormat fromString: '20010203160506700') 
			format: (ZTimestamp fromString: self created)) copyFrom: 1 to: 17
]

{ #category : #accessing }
Tiddler >> createdReversableEncoded [
	"I encode the tiddler creation date with miliseconds precision in a shorter reversable way 
	(from 17 characters to 10).
	But when tiddlers are created with the same exact date (for example programmatically) 
	I produce the same encoding (because of reversability).
	I recommend to use nanoID instead to get unique visible different identifiers "
	| output longDate |
	longDate := self createdAsTWFormat.
	output := WriteStream on: ''.
	1 to: 14 by: 2 do: [ :i |
		output nextPutAll: (longDate copyFrom: i to: i +1) greaseInteger asCharacterDigit greaseString
	].
	output nextPutAll: (longDate copyFrom: 15 to: 17).
	^ output contents
]

{ #category : #accessing }
Tiddler >> creator [

	^ creator
]

{ #category : #accessing }
Tiddler >> creator: anObject [

	creator := anObject
]

{ #category : #accessing }
Tiddler >> customFields [
	^ customFields ifNil: [ customFields := Dictionary new]
]

{ #category : #accessing }
Tiddler >> deleteUid [
	self customFields deleteKey: 'uid'.
]

{ #category : #accessing }
Tiddler >> exportJSONFile [
	
	| jsonFile folder |
	folder := self wiki folder.
	jsonFile := folder / 'tiddlers' / ((self fileName removeSuffix: '.ston'), '.json').
	^ MarkupFile exportAsFileOn: jsonFile containing:self asJson
]

{ #category : #accessing }
Tiddler >> exportSTONFile [

	^ self exportSTONFileInto: 'tiddlers'
]

{ #category : #accessing }
Tiddler >> exportSTONFileInto: subfolder [
	
	| stonFile |
	stonFile := self wiki folder / subfolder / self fileName.
	^ MarkupFile exportAsFileOn: stonFile containing: self asStonStringPretty
]

{ #category : #accessing }
Tiddler >> exportSTONFileOptimized [

	| exporter wikiFolder tiddlersFolder |
	wikiFolder := self wiki folder.
	exporter := wikiFolder / 'scripts' / 'stringAsFileInto'.
	exporter exists ifFalse: [ self installTiddlerExporter ].
	tiddlersFolder := wikiFolder / 'tiddlers'.
	tiddlersFolder exists ifFalse: [ tiddlersFolder ensureCreateDirectory ].
	
	OSSUnixSubprocess new 
		command: exporter fullName;
		arguments: { self asStonStringPretty . self fileName  };
		workingDirectory: tiddlersFolder fullName;
		runAndWaitOnExitDo: [ :process :outString  | ^ tiddlersFolder / self fileName  ]
]

{ #category : #accessing }
Tiddler >> exportWithTemplate: aTemplate [
	^ aTemplate asMustacheTemplate value: self asDictionary
]

{ #category : #accessing }
Tiddler >> fileName [
	| dashedTitle sanitized |
	dashedTitle := '-' join: (self title substrings collect: [ :each | each ]).
	sanitized := dashedTitle copyWithoutAll: #($¿ $? $! $¡ $/).
	^ sanitized , '--', (self uid copyFrom: 1 to: 12), '.ston'.
]

{ #category : #accessing }
Tiddler >> fromDictionary: aDictionary [
	| customKeys |
	self
		title: (aDictionary at: 'title');
		text: (aDictionary at: 'text' ifAbsentPut: [ nil ]);
		tags: (aDictionary at: 'tags' ifAbsentPut: [ nil ]);
		created: (aDictionary at: 'created' ifAbsentPut: [ self class nowLocal ]);
		creator: (aDictionary at: 'creator' ifAbsentPut: [ nil ]);
		modified: (aDictionary at: 'modified' ifAbsentPut: [ nil ]);
		modifier: (aDictionary at: 'modifier' ifAbsentPut: [ nil ]);
		type: (aDictionary at: 'type' ifAbsentPut: [ nil ]);
		caption: (aDictionary at: 'caption' ifAbsentPut: [ nil ]);
		bag: (aDictionary at: 'bag' ifAbsentPut: [ nil ]);
		list: (aDictionary at: 'list' ifAbsentPut: [ nil ]);
		revision: (aDictionary at: 'revision' ifAbsentPut: [ nil ]).
	customKeys := aDictionary keys 
		copyWithoutAll: (self class instanceVariables collect: [ :each | each name ]).
	"(customKeys includes: 'uid') ifFalse: [ self uidGenerator ]."
	customKeys do: [:key | | valueTemp |
		valueTemp :=  aDictionary at: key.
		valueTemp class = Array 
			ifTrue: [ self customFields at: key put: (self tiddlersListFrom: valueTemp) ]
			ifFalse: [ self customFields at: key put: valueTemp ].
		valueTemp class 
	].
]

{ #category : #'instance creation' }
Tiddler >> fromMarkdownParsedItems: aCollection [
	| outputStream |
	outputStream := '' writeStream.
	aCollection children do: [ :each |
		each children
			ifEmpty: [ self itemContentsStringFor: each into: outputStream ] 
			ifNotEmpty: [ 
				each children do: [ :child | 
					self itemContentsStringFor: child into: outputStream ] ] 
	]
]

{ #category : #accessing }
Tiddler >> gtTextFor: aView [
	<gtView>
	^ aView textEditor
		title: 'Text';
		text: [ text ]
]

{ #category : #testing }
Tiddler >> hasUID [

	^ self customFields includesKey: 'uid'
]

{ #category : #accessing }
Tiddler >> importFedWikiPage: pageViewUrlString [
	| pageTitle pageViewUrl pageData |
	pageViewUrl := pageViewUrlString asZnUrl.
	pageTitle := pageViewUrl segments second.
	pageData := (pageViewUrl scheme, '://', pageViewUrl host, '/', pageTitle, '.json') asZnUrl.
	^ STONJSON fromString: pageData retrieveContents	
]

{ #category : #accessing }
Tiddler >> installTiddlerExporter [
	| folder |
	folder := (self  wiki folder).
	folder := (folder / 'scripts') ensureCreateDirectory.
	
	ZnClient new
		url: 'https://mutabit.com/repos.fossil/mutabit/uv/wiki/scripts/stringAsFileInto';
		downloadTo: folder / 'stringAsFileInto'.
	
	ZnClient new
		url: 'https://mutabit.com/repos.fossil/mutabit/doc/trunk/wiki/scripts/stringAsFileInto.nim';
		downloadTo: folder / 'stringAsFileInto.nim'.
	
	OSSUnixSubprocess new 
		command: 'chmod';
		arguments: { '+x' . (folder / 'stringAsFileInto') fullName };
		workingDirectory: folder fullName;
		redirectStdout;
		redirectStderr;
		runAndWaitOnExitDo: [ :process :outString | ^ outString ]
]

{ #category : #testing }
Tiddler >> isImage [

	^ self type ifNil: [ ^ false ];
		beginsWith: 'image/'
]

{ #category : #testing }
Tiddler >> isJavascript [

	^ self type = 'application/javascript'
]

{ #category : #testing }
Tiddler >> isMarkdown [

	^ self type = 'text/x-markdown'
]

{ #category : #testing }
Tiddler >> isNilType [

	^ self type = nil
]

{ #category : #testing }
Tiddler >> isPDF [

	^ self type = 'application/pdf'
]

{ #category : #testing }
Tiddler >> isShadow [

	^ self title beginsWith:  '$:/'
]

{ #category : #testing }
Tiddler >> isTW5Type [

	^ self type = 'text/vnd.tiddlywiki'
]

{ #category : #testing }
Tiddler >> isTextPlain [

	^ self type = 'text/plain'
]

{ #category : #testing }
Tiddler >> isXTiddlerDictionary [

	^ self type = 'application/x-tiddler-dictionary'
]

{ #category : #utilities }
Tiddler >> itemContentsStringFor: item into: stream [
	stream 
		nextPutAll: item text;
		nextPut: Character cr;
		nextPut: Character cr
]

{ #category : #accessing }
Tiddler >> linkedTiddlers [
	"At the begining we are going to introduce 'pureTiddlers' as thos included in the wiki which are not linked
	via aliases. Future versions of this method sould included internal aliased tiddlers."
	| pureTiddlersTitles |
	self rawLinks ifNil: [ ^nil ].
	pureTiddlersTitles := self rawLinks difference: self rawAliasedLinks.
	^ self wiki tiddlers select: [:tiddler | pureTiddlersTitles includes: tiddler title ].
]

{ #category : #accessing }
Tiddler >> list [

	^ list
]

{ #category : #accessing }
Tiddler >> list: anObject [

	list := anObject
]

{ #category : #accessing }
Tiddler >> listedTiddlers [
	"I export all tiddlers in the list field as an alphabetic collection.
	Future versions should preserve the order in the list.
	Notice that while '#list' only gives the titles of the listed tiddlers,
	I return them as proper tiddler objects."
	| remainList remainListArray listedTiddlers |
	self list  ifNil: [^ nil ].
	remainList := self list copy.
	self manualLinksList do: [:manualLink |
		remainList := remainList copyReplaceAll: manualLink with: ''
	].
	remainListArray := (remainList copyReplaceAll: '[[]]' with: '') withBlanksCondensed splitOn: Character space.
	listedTiddlers :=  self manualLinksList, remainListArray. 
	^ self wiki tiddlers select: [:tiddler | listedTiddlers includes: tiddler title ].
	
]

{ #category : #accessing }
Tiddler >> manualLinksList [
	self list ifNil: [^ nil].
	^ WikiTextGrammar new linkSea star parse: self list.
]

{ #category : #utilities }
Tiddler >> markdownLinksAsWikiText [
	"I'm useful to convert _internal_ links between formats, as is a common pattern
	found when migrating content from Markdown to TiddlyWiki's WikiText.
	I DON'T work on external links. A better regex could be used for that.
	See: 
	- https://davidwells.io/snippets/regex-match-markdown-links
	- http://blog.michaelperrin.fr/2019/02/04/advanced-regular-expressions/"
	| markdownLinks |
	markdownLinks := (self text splitOn: Character space) select: [:each | each matchesRegex: '\[(.+)\)'].
	markdownLinks ifEmpty: [^ self].
	^ markdownLinks
]

{ #category : #accessing }
Tiddler >> modified [

	^ modified
]

{ #category : #accessing }
Tiddler >> modified: anObject [

	modified := anObject
]

{ #category : #accessing }
Tiddler >> modifier [

	^ modifier
]

{ #category : #accessing }
Tiddler >> modifier: anObject [

	modifier := anObject
]

{ #category : #accessing }
Tiddler >> printOn: aStream [
	super printOn: aStream.
	aStream
		nextPutAll: '( ', self title, ' )'
]

{ #category : #accessing }
Tiddler >> rawAliasedLinks [
	^ self rawLinks select: [ :each | each includesSubstring: '|'	 ]
]

{ #category : #accessing }
Tiddler >> rawLinks [
	self text ifNil: [ ^ Set new ].
	^ (WikiTextGrammar new linkSea star parse: self text) asSet
]

{ #category : #accessing }
Tiddler >> revision [
	^ revision
]

{ #category : #accessing }
Tiddler >> revision: aNumberString [
	revision := aNumberString
]

{ #category : #accessing }
Tiddler >> tags [

	^ tags
]

{ #category : #accessing }
Tiddler >> tags: anObject [

	tags := anObject
]

{ #category : #accessing }
Tiddler >> text [

	^ text
]

{ #category : #accessing }
Tiddler >> text: anObject [

	text := anObject
]

{ #category : #accessing }
Tiddler >> tiddlersListFrom: anArray [
	| output |
	output := '' writeStream.
	
	anArray doWithIndex: [:each :i | 
		output nextPutAll: '[[', each asString, ']]'.
		i = anArray size ifFalse: [ output nextPutAll: Character space asString ].
	].
	^ output contents.
]

{ #category : #accessing }
Tiddler >> title [

	^ title
]

{ #category : #accessing }
Tiddler >> title: anObject [

	title := anObject
]

{ #category : #accessing }
Tiddler >> type [

	^ type
]

{ #category : #accessing }
Tiddler >> type: anObject [

	type := anObject
]

{ #category : #accessing }
Tiddler >> uid [
	^ self customFields at: 'uid' ifAbsentPut: [ self uidGenerator ].
	
]

{ #category : #accessing }
Tiddler >> uidGenerator [

	^ self customFields at: 'uid' put: NanoID generate.

]

{ #category : #accessing }
Tiddler >> wiki [
	^ wiki
]

{ #category : #accessing }
Tiddler >> wiki: aTiddlyWiki [
	wiki := aTiddlyWiki
]