trjhtr

Problem: Given an array of objects where the object structure is

 ...
 call_received: timestamp in utc,
 call_logs: [
 
 ...
 created_date: timestamp in utc
 
 ]

write a function to find and return the month to date average response time for all objects where response time is equal to the difference between the call received and the created date of the first entered call log. There can be multiple call logs, so must use the one with the earliest timestamp.

Additional criteria: If the call was entered before work hours (7am), the created date in the equation should be rounded to 7am. If the call was made after work hours (4:30pm), the created date should be rounded to 7am the following day. If made on the weekend (Friday 4:30pm to Monday at 7am), round to Monday at 7am.

export function getResponseTime(dispatches) 
 // If the array is empty, return 0
 if (_.size(dispatches) === 0) 
 return 0
 else 
 // Otherwise, filter to dispatches within the last month
 dispatches = _.filter(dispatches, dispatch => moment.utc().diff(moment(dispatch.call_received), 'months', true) < 1)
 if (_.size(dispatches) == 0) 
 // If no dispatches within last month, return 0
 return 0
 else 
 const responseTimes = 
 let responseTime = null
 dispatches.map(dispatch => 
 // Dispatch will only have call logs key if one has been entered
 if (dispatch.call_logs) 
 )
 // Return the mean of the response times (rounding to nearest hundredth decimal)
 return _.size(responseTimes) > 0 ? Math.ceil(_.mean(responseTimes) * 100) / 100 : 0