[CLOSED] Handle 'platforms' from new updates.json entry

[core-ai-bot]

Issue by swmitra
Friday Oct 26, 2018 at 04:11 GMT
Originally opened as adobe#222

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Handle platform entries from updates.json. This PR adds capability to identify OS specific releases and offer download accordingly. In new update entry format, every platform node provides a dedicated downloadURL. This PR makes use of that downloadURL when present instead of generating the installer asset URI.

This is how the new Update entries look like -

{
        "buildNumber": 17696,
        "versionString": "Release 1.13",
        "dateString": "06-18-2018",
        "releaseNotesURL": "https://github.com/adobe/brackets/wiki/Release-Notes:-1.13",
        "downloadURL": "http://brackets.io",
        "newFeatures": [
            {
                "name": "Organize Files/Folders in File Tree",
                "description": "You can now manipulate folder structure from within Brackets. Move a file/folder from one folder to another with a simple drag and drop."
            },
            {
                "name": "Open Remote Files",
                "description": "You can now open a remotely hosted web-page from within Brackets. Use Ctrl/Cmd-Shift-O shortcut and supply a URL to quickly open the file and review the code within Brackets."
            },
            {
                "name": "Auto-Update",
                "description": "You can now automatically update Brackets, without leaving the code editor. "
            }
        ],
        "platforms" : {
            "WIN": {
                "checksum": "a1020f55d4ec92c824ed6e5a3db941eaae6ffeb2334a77fa3465fe2736304a86",
                "downloadURL": "https://github.com/adobe/brackets/releases/download/release-1.13/Brackets.Release.1.13.msi"
            },
            "OSX": {
                "checksum": "34d8960d78e7301febcc6b68b85970d119b7a904cdb9a0ecfc445348de1e4bd4",
                "downloadURL": "https://github.com/adobe/brackets/releases/download/release-1.13/Brackets.Release.1.13.dmg"
            },
            "LINUX32" : {
                "checksum": "3a83332e4e54fa3721dfa7e67a9d143c0b2658aec9de9b0c1042435f5f496624",
                "downloadURL" : "https://github.com/adobe/brackets/releases/download/release-1.13/Brackets.Release.1.13.32-bit.deb"
            },
            "LINUX64" : {
                "checksum" : "5c489a51d14b66d696f1b167018dae598f9a27c1bd08a4026334e300f7dc93cf",
                "downloadURL" : "https://github.com/adobe/brackets/releases/download/release-1.13/Brackets.Release.1.13.64-bit.deb"
            }
        },
        "prerelease" : "false"
    }

@nethip @vickramdhawal Please review.

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swmitra included the following code: https://github.com/adobe/brackets.io/pull/222/commits