From 8c4b31e37927410a5109b3050cc032e8f4c36090 Mon Sep 17 00:00:00 2001
From: Théo de la Hogue
Date: Mon, 22 May 2023 16:39:35 +0200
Subject: Adding sequence editor into AOIScanPath class.

---
 src/argaze/GazeAnalysis/LempelZivComplexity.py | 26 +---------------------
 src/argaze/GazeFeatures.py                     | 30 +++++++++++++++++++-------
 2 files changed, 23 insertions(+), 33 deletions(-)

diff --git a/src/argaze/GazeAnalysis/LempelZivComplexity.py b/src/argaze/GazeAnalysis/LempelZivComplexity.py
index b8d14ca..7d70010 100644
--- a/src/argaze/GazeAnalysis/LempelZivComplexity.py
+++ b/src/argaze/GazeAnalysis/LempelZivComplexity.py
@@ -28,28 +28,4 @@ class AOIScanPathAnalyzer(GazeFeatures.AOIScanPathAnalyzer):
 
         assert(len(aoi_scan_path) > 1)
 
-        self.__index = ord('A')
-        aoi_letter = {}
-
-        def __get_letter(aoi):
-
-            try :
-
-                return aoi_letter[aoi_scan_step.aoi]
-
-            except KeyError:
-
-                letter = chr(self.__index)
-                aoi_letter[aoi_scan_step.aoi] = letter
-                self.__index += 1
-                return letter
-
-        # Convet each AOI name into a single char
-        sequence = ''
-        for aoi_scan_step in aoi_scan_path:
-
-            sequence += __get_letter(aoi_scan_step.aoi)
-
-        print(sequence)
-
-        return lempel_ziv_complexity(sequence)
+        return lempel_ziv_complexity(str(aoi_scan_path))
diff --git a/src/argaze/GazeFeatures.py b/src/argaze/GazeFeatures.py
index 3592b13..a26b1f1 100644
--- a/src/argaze/GazeFeatures.py
+++ b/src/argaze/GazeFeatures.py
@@ -503,6 +503,9 @@ class AOIScanStep():
     aoi: str = field(default='')
     """AOI name."""
 
+    letter: str = field(default='')
+    """AOI unique letter to ease sequence analysis."""
+
     def __post_init__(self):
 
         # First movement have to be a fixation
@@ -553,24 +556,35 @@ class AOIScanPath(list):
         
         self.__movements = TimeStampedGazeMovements()
         self.__current_aoi = ''
+        self.__index = ord('A')
+        self.__aoi_letter = {}
 
     def __repr__(self):
         """String representation."""
 
         return str(super())
 
-    def __str__(self) -> str:
-        """String display."""
+    def __get_aoi_letter(self, aoi):
 
-        output = ''
+        try :
 
-        for step in self:
+            return self.__aoi_letter[aoi]
 
-            output += f'> {step.aoi} '
+        except KeyError:
 
-        output += f'> {self.__current_aoi}'
+            letter = chr(self.__index)
+            self.__aoi_letter[aoi] = letter
+            self.__index += 1
+            return letter
 
-        return output
+    def __str__(self) -> str:
+        """Convert aoi scan path into a string with unique letter per aoi step."""
+
+        sequence = ''
+        for step in self:
+            sequence += step.letter
+
+        return sequence
 
     @property
     def current_aoi(self):
@@ -598,7 +612,7 @@ class AOIScanPath(list):
             try: 
 
                 # Edit new step
-                new_step = AOIScanStep(self.__movements, self.__current_aoi)
+                new_step = AOIScanStep(self.__movements, self.__current_aoi, self.__get_aoi_letter(self.__current_aoi))
 
                 # Append new step
                 super().append(new_step)
-- 
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