1+ async function loadVersionsFromURL ( url ) {
2+ try {
3+ const response = await fetch ( url ) ;
4+ const data = await response . json ( ) ;
5+ return data ;
6+ } catch ( error ) {
7+ console . error ( 'Error loading data:' , error ) ;
8+ return null ;
9+ }
10+ }
11+
12+ function compareSemver ( versionA , versionB ) {
13+ const partsA = versionA . split ( '.' ) . map ( Number ) ;
14+ const partsB = versionB . split ( '.' ) . map ( Number ) ;
15+
16+ const maxLength = Math . max ( partsA . length , partsB . length ) ;
17+
18+ for ( let i = 0 ; i < maxLength ; i ++ ) {
19+ const numA = partsA [ i ] || 0 ;
20+ const numB = partsB [ i ] || 0 ;
21+
22+ if ( numA > numB ) return 1 ;
23+ if ( numA < numB ) return - 1 ;
24+ }
25+
26+ return 0 ; // Versions are equal
27+ }
28+
29+ function isVersionAllowed ( version , minVersion = '1.19.4' ) {
30+ return compareSemver ( version , minVersion ) >= 0 ;
31+ }
32+
33+ function groupByGameVersions ( data ) {
34+ const groupedVersion = { } ;
35+
36+ data . forEach ( item => {
37+ item . game_versions . forEach ( version => {
38+ if ( isVersionAllowed ( version ) ) {
39+ if ( ! groupedVersion [ version ] ) {
40+ groupedVersion [ version ] = [ ] ;
41+ }
42+ groupedVersion [ version ] . push ( item ) ;
43+ }
44+ } ) ;
45+ } ) ;
46+
47+ return groupedVersion ;
48+ }
49+
50+ function getFirstVersionItem ( versionItems , type ) {
51+ for ( let i = 0 ; i < versionItems . length ; i ++ ) {
52+ if ( versionItems [ i ] . version_type === type ) {
53+ return { item : versionItems [ i ] , index : i } ;
54+ }
55+ }
56+ return { item : null , index : - 1 } ;
57+ }
58+
59+ function getVersionToDisplay ( groupedVersion ) {
60+ const versionsToDisplay = [ ] ;
61+
62+ for ( const version in groupedVersion ) {
63+ if ( groupedVersion [ version ] . length > 0 ) {
64+ const versionItems = groupedVersion [ version ] ;
65+
66+ const firstRelease = getFirstVersionItem ( versionItems , 'release' ) ;
67+ const firstBeta = getFirstVersionItem ( versionItems , 'beta' ) ;
68+ const firstAlpha = getFirstVersionItem ( versionItems , 'alpha' ) ;
69+
70+ if ( firstRelease . item ) {
71+ versionsToDisplay . push ( firstRelease . item ) ;
72+ if ( firstBeta . item . featured ) {
73+ versionsToDisplay . push ( firstBeta . item ) ;
74+ } else if ( firstAlpha . item . featured ) {
75+ versionsToDisplay . push ( firstAlpha . item ) ;
76+ }
77+ } else if ( firstBeta . item ) {
78+ versionsToDisplay . push ( firstBeta . item ) ;
79+ if ( firstAlpha . item . featured ) {
80+ versionsToDisplay . push ( firstAlpha . item ) ;
81+ }
82+ } else if ( firstAlpha . item ) versionsToDisplay . push ( firstAlpha . item ) ;
83+ }
84+ }
85+
86+ // Sort versionsToDisplay by game_version field, to make newer versions appear first
87+ versionsToDisplay . sort ( ( a , b ) => compareSemver ( b . game_versions [ 0 ] , a . game_versions [ 0 ] ) ) ;
88+
89+ return versionsToDisplay ;
90+ }
91+
92+ function populateDropdownAndSetupButton ( versions ) {
93+ const versionsDropdown = document . getElementById ( 'versionsDropdown' ) ;
94+
95+ versions . forEach ( version => {
96+ const option = document . createElement ( 'option' ) ;
97+ option . textContent = version . name ;
98+ option . value = version . files [ 0 ] . url ;
99+ versionsDropdown . appendChild ( option ) ;
100+ } ) ;
101+
102+ const specialOption = document . createElement ( 'option' ) ;
103+ specialOption . textContent = '4.6.1, 4.5.7, ...' ;
104+ specialOption . value = 'CurseForge' ;
105+ versionsDropdown . appendChild ( specialOption ) ;
106+
107+ // Set up the "Go" button to download the selected pack or open the URL
108+ const goButton = document . getElementById ( 'goButton' ) ;
109+ goButton . onclick = ( ) => {
110+ const selectedURL = versionsDropdown . value ;
111+ if ( selectedURL === 'CurseForge' ) {
112+ window . open ( "https://www.curseforge.com/minecraft/modpacks/fabulously-optimized/files?showAlphaFiles=show" , '_blank' ) ;
113+ } else {
114+ downloadPack ( selectedURL ) ;
115+ }
116+ } ;
117+ }
118+
119+ const apiUrl = 'https://api.modrinth.com/v2/project/1KVo5zza/version' ;
120+ const downloadParam = urlParams . get ( 'download' ) ; //urlParams from converter.js
121+
122+ loadVersionsFromURL ( apiUrl )
123+ . then ( data => {
124+ if ( data ) {
125+ const groupedVersion = groupByGameVersions ( data ) ;
126+ const versionsToDisplay = getVersionToDisplay ( groupedVersion ) ;
127+ populateDropdownAndSetupButton ( versionsToDisplay ) ;
128+ if ( downloadParam === 'latest' ) {
129+ // Download the first (newest) item
130+ downloadPack ( versionsToDisplay [ 0 ] . files [ 0 ] . url ) ;
131+ } else if ( downloadParam ) {
132+ // Download specific version based on query parameter
133+ const foundVersion = versionsToDisplay . find ( version => version . game_versions [ 0 ] === downloadParam ) ;
134+ if ( foundVersion ) {
135+ downloadPack ( foundVersion . files [ 0 ] . url ) ;
136+ } else {
137+ alert ( 'Requested version not found' ) ;
138+ }
139+ }
140+ } else {
141+ console . error ( 'Failed to load data' ) ;
142+ }
143+ } )
144+ . catch ( error => console . error ( 'Error:' , error ) ) ;
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