From 7c13ee17d4765f56bc6a1c1525795a35639032f0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9mi=20Oudin?= <oudin@crans.org>
Date: Mon, 19 Feb 2018 22:56:16 +0100
Subject: [PATCH] Skeleton of history generation

---
 histories/models.py   | 57 +++++++++++++++++++++++++++++++++++++++----
 pinocchio/settings.py |  3 +++
 2 files changed, 55 insertions(+), 5 deletions(-)

diff --git a/histories/models.py b/histories/models.py
index e5f5fe3..df542f3 100644
--- a/histories/models.py
+++ b/histories/models.py
@@ -3,13 +3,16 @@ entries, which looks like human-based browsing, according to a dedicated user
 interests, keywords...
 """
 
+from random import weibullvariate
+from math import floor
 from django.db import models
-from profiles.models import BrowserFingerprint
+from profiles.models import Profile
+from pinocchio.settings import HISTORY_MIN
 
 class HistoryEntry(models.Model):
     """ A history entry, aka a url, and a timestamp.
     """
-    search = models.CharField(max_length=255)
+    search = models.URLField(help_text="The url to be searched")
     timestamp = models.DateTimeField()
     history = models.ForeignKey(
         'History',
@@ -17,6 +20,8 @@ class HistoryEntry(models.Model):
     )
 
     def __str__(self):
+        """ Returns the string representation of a history entry.
+        """
         return "{} : {}".format(self.timestamp, self.search)
 
 
@@ -24,14 +29,56 @@ class History(models.Model):
     """ A history for a user, containing some web connections (http, https).
     Each history is timed, in a human-behaviour manner. """
 
-    start_ts = models.DateTimeField()
+    start_ts = models.DateTimeField(
+        help_text='The starting timestamp of the history. Useful for cron-like '
+                  'structure.'
+
+    )
     played = models.BooleanField(default=False)
-    user_agent = models.ForeignKey(
-        BrowserFingerprint,
+    user = models.ForeignKey(
+        Profile,
         on_delete=models.CASCADE
     )
 
+    def return_history(self):
+        """ Returns the history, sorted by increasing timestamps
+        """
+        history_set = self.history_set.order_by('timestamp')
+        return history_set
+
     def __str__(self):
+        """ Returns the string representation of a history.
+        """
         history_set = self.history_set.order_by('timestamp')
         header = "[History]:\n"
         return header + "\n".join(history_set)
+
+
+    def play_history(self):
+        """ Actually plays the history.
+        """
+        self.played = True
+        self.save()
+
+
+
+def generate_history(user, ts_start):
+    """ Generate a new history for the user `user`, starting from timestamp
+    `ts_start`.
+    A few heuristics are used in order to give the impression that the history
+    is actually played by a user.
+    """
+
+    # let's defin a new history object.
+    history = History(start_ts=ts_start, user=user)
+    length = HISTORY_MIN + floor(10 * weibullvariate(1, 1.5))
+
+    history_line = 0
+
+    while history_line < length:
+        ts_start += random.uniform(1, 10)
+        new_line = HistoryEntry(
+            search="https://google.com:",
+            timestamp=ts_start,
+            history=history
+        )
diff --git a/pinocchio/settings.py b/pinocchio/settings.py
index ed9a7f3..4c24915 100644
--- a/pinocchio/settings.py
+++ b/pinocchio/settings.py
@@ -13,6 +13,9 @@ https://docs.djangoproject.com/en/2.0/ref/settings/
 import os
 from .settings_local import BASE_DIR, DEBUG, SECRET_KEY, DATABASES
 
+
+HISTORY_MIN = 25
+
 ALLOWED_HOSTS = []