From 591b6abd51401cdf8efbed2a8eacf16b3dcf06d1 Mon Sep 17 00:00:00 2001
From: Luis Fernando Molina <Luis-Fernando-Molina@users.noreply.github.com>
Date: Tue, 25 Aug 2020 16:19:57 +0200
Subject: [PATCH] Bug Fixed

---
 LowFrequencyTrading/TradingOutput.js  | 30 ++++++++++++++++++++++++---
 LowFrequencyTrading/TradingProcess.js |  7 ++++++-
 2 files changed, 33 insertions(+), 4 deletions(-)

diff --git a/LowFrequencyTrading/TradingOutput.js b/LowFrequencyTrading/TradingOutput.js
index 47bb6ce6b..37b7bad6e 100644
--- a/LowFrequencyTrading/TradingOutput.js
+++ b/LowFrequencyTrading/TradingOutput.js
@@ -43,10 +43,34 @@ exports.newTradingOutput = function newTradingOutput(bot, logger, tradingEngineM
             let outputDatasets = bot.processNode.referenceParent.processOutput.outputDatasets
             let outputDatasetsMap = new Map()
 
-            if (bot.FIRST_EXECUTION === true && bot.RESUME === false) {
-                await initializeOutputs()
+            if (bot.processingDailyFiles === true) {
+                /*
+                For Daily Files, we are going to initialize the outputs at the first execution
+                if we are not resuming, but also at every following execution except when 
+                we are at the head of the market, because at the head of the market we need to 
+                append more data to the same output files that already exists.
+                */
+                if (bot.FIRST_EXECUTION === true && bot.RESUME === false) {
+                    await initializeOutputs()
+                } else {
+                    if (bot.simulationState.tradingEngine.current.episode.headOfTheMarket.value === true) {
+                        await readFiles()
+                    } else {
+                        await initializeOutputs()
+                    }
+                }
             } else {
-                await readFiles()
+                /*
+                Form Market Files, we are only going to initialize the outputs at the first run
+                and if we are not resuming execution. Subsequent runs means that we are at the 
+                head of the market. Remember that backtests finishes the session once the reach
+                the final datetime.
+                */
+                if (bot.FIRST_EXECUTION === true && bot.RESUME === false) {
+                    await initializeOutputs()
+                } else {
+                    await readFiles()
+                }
             }
 
             await tradingSimulation.runSimulation(
diff --git a/LowFrequencyTrading/TradingProcess.js b/LowFrequencyTrading/TradingProcess.js
index 5258f1adc..7e0a2e418 100644
--- a/LowFrequencyTrading/TradingProcess.js
+++ b/LowFrequencyTrading/TradingProcess.js
@@ -557,7 +557,12 @@
                     tradingProcessDate
                     )
 
-                bot.FIRST_EXECUTION = false // From here on, all other loops executions wont be the first execution.
+                /*
+                From here on, all other loops executions wont be the first execution and also
+                we will consider that it is not resuming a previous execution as well.
+                */
+                bot.FIRST_EXECUTION = false 
+                bot.RESUME = false
             }
 
             async function writeProcessFiles() {