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1. 1. 1. 1. 1. genomic_extensions = {
                           'bigWig': ['bw', 'bigwig'],
                           'bigBed 12': ['bb', 'bigbed'],
                           'bigGenePred': ['bb'],
                           'bigChain': ['bigchain'],
                           'bigNarrowPeak': ['bb'],
                           'bigBarChart': ['bb'],
                           'bigInteract': ['bb'],
                           'bigPsl': ['bb'],
                           'bigMaf': ['bb'],
                           'hic': ['hic'],
                           'bam': ['bam', 'cram'],
                           'HAL': ['hal'],
                           'vcfTabix': ['vcf', 'vcf.gz']
                       }
            2. Get the extension of bigDataUrl.
            3. If the extension is present in genomic_extensions and equals "bb", check whether the word before .bb matches a key in genomic_extensions. If yes, return that key (e.g., bigGenePred).
            4. Example: GSE63189_Catalog_of_lncRNAs_in_MCF-7cells.bigGenePred.bb → bigGenePred.
            5. Otherwise, if the extension matches a value in genomic_extensions, return the corresponding key.
            6. If the extension is just .bb, return bigBed 12.
         2. visibility – Always set to "dense".

Head Request

• • Logic

    • Returns headers and status_code. The status_code is determined by verifying all GET calls.

  • Purpose

    • UCSC makes a HEAD request to validate the URL when it is added to Connected Hubs.
      • To test:
        1. Go to UCSC Track Data Hubs → Connected Hubs tab.
        2. When the URL is pasted, UCSC sends a HEAD request to verify the status code.

Generate UCSC Synonyms.txt

• • Url

    - https://translate.bioviz.org/api/generateUcscSynonyms

  • Logic

    1. Fetch the list of UCSC genomes from:
       https://api.genome.ucsc.edu/list/ucscGenomes
    2. Check if these genomes exist in IGB’s synonyms.txt file (path: core/synonym-lookup/src/main/resources/synonyms.txt).
    3. If a UCSC genome is found in synonyms.txt, add the IGB genome name (first column in synonyms.txt) and the UCSC genome name to a new synonyms.txt in the hub_facade repository (path: igb_trackhub/synonyms.txt).