overleaf/services/web/app/coffee/Features/ReferencesSearch/ReferencesSearchHandler.coffee

logger = require("logger-sharelatex")
request = require("request")
settings = require("settings-sharelatex")
ProjectLocator = require("../Project/ProjectLocator")
U = require('underscore')
Async = require('async')
Project = require("../../models/Project").Project
UserGetter = require "../User/UserGetter"

oneMinInMs = 60 * 1000
fiveMinsInMs = oneMinInMs * 5


module.exports = ReferencesSearchHandler =

	_findBibDocIds: (project) ->
		ids = []

		_process = (folder) ->
			folder.docs.forEach (doc) ->
				if doc?.name?.match(/^.*\.bib$/)
					ids.push(doc._id)
			folder.folders.forEach (folder) ->
				_process(folder)

		project.rootFolder.forEach (rootFolder) ->
			_process(rootFolder)

		return ids

	_isFullIndex: (project, callback = (err, result) ->) ->
		owner = project.owner_ref
		callback(null, owner.features.references == true)

	# projectId: String, docIds: List[String]|Null
	index: (projectId, docIds, callback=(err, data)->) ->
		Project.findPopulatedById projectId, (err, project) ->
			if err
				logger.err {err, projectId}, "error finding project"
				return callback(err)
			if docIds == "ALL"
				logger.log {projectId}, "indexing all bib files in project"
				docIds = ReferencesSearchHandler._findBibDocIds(project)
			ReferencesSearchHandler._isFullIndex project, (err, isFullIndex) ->
				if err
					logger.err {err, projectId}, "error checking whether to do full index"
					return callback(err)
				bibDocUrls = docIds.map (docId) ->
					ReferencesSearchHandler._buildDocUrl projectId, docId
				logger.log {projectId, isFullIndex, docIds}, "sending request to references service"
				request.post {
					url: "#{settings.apis.references.url}/project/#{projectId}/index"
					json:
						docUrls: bibDocUrls
						fullIndex: isFullIndex
				}, (err, res, data) ->
					if err
						logger.err {err, projectId}, "error communicating with references api"
						return callback(err)
					if 200 <= res.statusCode < 300
						logger.log {projectId}, "got keys from references api"
						return callback(null, data)
					else
						err = new Error("references api responded with non-success code: #{res.statusCode}")
						logger.log {err, projectId}, "error updating references"
						return callback(err)

	## ## ## ##

	# indexProjectReferences: (project, callback = (err) ->) ->
	# 	logger.log {projectId: project._id}, "try indexing references from project"
	# 	ids = ReferencesSearchHandler._findBibDocIds(project)
	# 	logger.log {projectId: project._id, count: ids.length}, "found bib files in project"
	# 	Async.eachSeries(
	# 		ids,
	# 		(docId, next) ->
	# 			ReferencesSearchHandler.indexFile project._id, docId, (err) ->
	# 				next(err)
	# 		, (err) ->
	# 			logger.log {projectId: project._id, count: ids.length}, "done index bib files in project"
	# 			callback(err)
	# 	)

	# indexFile: (projectId, fileId, callback = (err)->) ->
	# 	target_url = "#{settings.apis.references.url}/project/#{projectId}"
	# 	fileUrl = ReferencesSearchHandler._buildDocUrl projectId, fileId
	# 	logger.log {projectId, fileId}, "checking if file should be fully indexed"
	# 	ReferencesSearchHandler._isFullIndex projectId, (err, isFullIndex) ->
	# 		if err
	# 			logger.err {projectId, fileId, err}, "error checking if file should be fully indexed"
	# 			return callback(err)
	# 		logger.log {projectId, fileId, isFullIndex}, "sending index request to references api"
	# 		request.post {
	# 			url: target_url
	# 			json:
	# 				referencesUrl: fileUrl
	# 		}, (err, res, result) ->
	# 			if err
	# 				return callback(err)
	# 			if 200 <= res.statusCode < 300
	# 				return callback(null)
	# 			else
	# 				err = new Error("references api responded with non-success code: #{res.statusCode}")
	# 				logger.log {err, projectId, fileUrl}, "error updating references"
	# 				return callback(err)

	# getKeys: (projectId, callback = (err, result)->) ->
	# 	logger.log {projectId}, "getting keys from remote references api"
	# 	url = "#{settings.apis.references.url}/project/#{projectId}/keys"
	# 	request.get {
	# 		url: url
	# 		json: true
	# 	}, (err, res, result) ->
	# 		if err
	# 			return callback(err)
	# 		if 200 <= res.statusCode < 300
	# 			return callback(null, result)
	# 		else
	# 			err = new Error("references api responded with non-success code: #{res.statusCode}")
	# 			logger.log {err, projectId}, "error getting references keys"
	# 			return callback(err)

	# _buildDocUrl: (projectId, docId) ->
	# 	"#{settings.apis.web.url}/project/#{projectId}/doc/#{docId}"