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39 lines
No EOL
1.7 KiB
CoffeeScript
39 lines
No EOL
1.7 KiB
CoffeeScript
UpdatesManager = require "./UpdatesManager"
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DocumentUpdaterManager = require "./DocumentUpdaterManager"
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DiffGenerator = require "./DiffGenerator"
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logger = require "logger-sharelatex"
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module.exports = DiffManager =
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getLatestDocAndUpdates: (project_id, doc_id, fromVersion, toVersion, callback = (error, lines, version, updates) ->) ->
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UpdatesManager.getUpdates doc_id, from: fromVersion, to: toVersion, (error, updates) ->
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return callback(error) if error?
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DocumentUpdaterManager.getDocument project_id, doc_id, (error, lines, version) ->
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return callback(error) if error?
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callback(null, lines, version, updates)
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getDiff: (project_id, doc_id, fromVersion, toVersion, callback = (error, diff) ->) ->
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logger.log project_id: project_id, doc_id: doc_id, from: fromVersion, to: toVersion, "getting diff"
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DiffManager.getLatestDocAndUpdates project_id, doc_id, fromVersion, null, (error, lines, version, updates) ->
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return callback(error) if error?
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logger.log lines: lines, version: version, updates: updates, "got doc and updates"
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lastUpdate = updates[0]
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if lastUpdate? and lastUpdate.v != version - 1
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return callback new Error("latest update version, #{lastUpdate.v}, does not match doc version, #{version}")
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updatesToApply = []
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for update in updates.reverse()
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if update.v <= toVersion
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updatesToApply.push update
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logger.log project_id: project_id, doc_id: doc_id, updatesToApply: updatesToApply, "got updates to apply"
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try
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startingContent = DiffGenerator.rewindUpdates lines.join("\n"), updates
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logger.log project_id: project_id, doc_id: doc_id, startingContent: startingContent, "rewound doc"
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diff = DiffGenerator.buildDiff startingContent, updatesToApply
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catch e
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return callback(e)
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callback(null, diff) |