From c2e195845ed23f79aa98d63075f629355cc3ed30 Mon Sep 17 00:00:00 2001
From: Stefano Pigozzi <me@steffo.eu>
Date: Wed, 1 Feb 2023 04:20:09 +0100
Subject: [PATCH] Second commit

---
 .gitignore                                   |   3 +-
 .idea/inspectionProfiles/Project_Default.xml |  12 +
 .idea/misc.xml                               |   2 +-
 data/scripts/import-db.sh                    |   3 +
 data/scripts/run-db.sh                       |   3 +
 poetry.lock                                  | 372 +++++++++++++++++++
 pyproject.toml                               |   3 +
 unimore-bda-6.iml                            |   7 +-
 unimore_bda_6/__main__.py                    |   3 +-
 unimore_bda_6/analysis.py                    |  14 +
 unimore_bda_6/config.py                      |  37 ++
 unimore_bda_6/database.py                    | 101 +++++
 12 files changed, 556 insertions(+), 4 deletions(-)
 create mode 100644 .idea/inspectionProfiles/Project_Default.xml
 create mode 100755 data/scripts/import-db.sh
 create mode 100755 data/scripts/run-db.sh
 create mode 100644 poetry.lock
 create mode 100644 unimore_bda_6/analysis.py
 create mode 100644 unimore_bda_6/config.py
 create mode 100644 unimore_bda_6/database.py

diff --git a/.gitignore b/.gitignore
index a2c3170..f11c9ac 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,7 +7,8 @@
 
 # Add your own ignores here!
 
-
+data/raw/
+data/db/
 
 ##################
 # Python ignores #
diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
new file mode 100644
index 0000000..06bb031
--- /dev/null
+++ b/.idea/inspectionProfiles/Project_Default.xml
@@ -0,0 +1,12 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="PyPep8NamingInspection" enabled="true" level="WEAK WARNING" enabled_by_default="true">
+      <option name="ignoredErrors">
+        <list>
+          <option value="N802" />
+        </list>
+      </option>
+    </inspection_tool>
+  </profile>
+</component>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 2ca2389..c31251c 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -4,7 +4,7 @@
     <option name="show" value="ASK" />
     <option name="description" value="" />
   </component>
-  <component name="ProjectRootManager">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_19">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/data/scripts/import-db.sh b/data/scripts/import-db.sh
new file mode 100755
index 0000000..ab0f5cb
--- /dev/null
+++ b/data/scripts/import-db.sh
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+repo=$(git rev-parse --show-toplevel)
+mongoimport --db='reviews' --collection='reviews' --file="$repo/data/raw/reviewsexport.json" --verbose
diff --git a/data/scripts/run-db.sh b/data/scripts/run-db.sh
new file mode 100755
index 0000000..dced127
--- /dev/null
+++ b/data/scripts/run-db.sh
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+repo=$(git rev-parse --show-toplevel)
+mongod --dbpath "$repo/data/db"
\ No newline at end of file
diff --git a/poetry.lock b/poetry.lock
new file mode 100644
index 0000000..6ce832e
--- /dev/null
+++ b/poetry.lock
@@ -0,0 +1,372 @@
+# This file is automatically @generated by Poetry and should not be changed by hand.
+
+[[package]]
+name = "cfig"
+version = "0.3.0"
+description = "A configuration manager for Python"
+category = "main"
+optional = false
+python-versions = ">=3.10,<4.0"
+files = [
+    {file = "cfig-0.3.0-py3-none-any.whl", hash = "sha256:47310ec4e57b4f92b79f7ae223619d318d9bd068ed021cb24eb47d4cf55372b3"},
+    {file = "cfig-0.3.0.tar.gz", hash = "sha256:1343e7b5eddbd609a4349826b55498beead0d0e1ae27d53784c30a3749dcbe6b"},
+]
+
+[package.dependencies]
+click = {version = ">=8.1.2,<9.0.0", optional = true, markers = "extra == \"cli\""}
+colorama = {version = ">=0.4.4,<0.5.0", optional = true, markers = "extra == \"cli\""}
+lazy-object-proxy = ">=1.7.1,<2.0.0"
+
+[package.extras]
+cli = ["click (>=8.1.2,<9.0.0)", "colorama (>=0.4.4,<0.5.0)"]
+
+[[package]]
+name = "click"
+version = "8.1.3"
+description = "Composable command line interface toolkit"
+category = "main"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "click-8.1.3-py3-none-any.whl", hash = "sha256:bb4d8133cb15a609f44e8213d9b391b0809795062913b383c62be0ee95b1db48"},
+    {file = "click-8.1.3.tar.gz", hash = "sha256:7682dc8afb30297001674575ea00d1814d808d6a36af415a82bd481d37ba7b8e"},
+]
+
+[package.dependencies]
+colorama = {version = "*", markers = "platform_system == \"Windows\""}
+
+[[package]]
+name = "colorama"
+version = "0.4.6"
+description = "Cross-platform colored terminal text."
+category = "main"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,>=2.7"
+files = [
+    {file = "colorama-0.4.6-py2.py3-none-any.whl", hash = "sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6"},
+    {file = "colorama-0.4.6.tar.gz", hash = "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44"},
+]
+
+[[package]]
+name = "dnspython"
+version = "2.3.0"
+description = "DNS toolkit"
+category = "main"
+optional = false
+python-versions = ">=3.7,<4.0"
+files = [
+    {file = "dnspython-2.3.0-py3-none-any.whl", hash = "sha256:89141536394f909066cabd112e3e1a37e4e654db00a25308b0f130bc3152eb46"},
+    {file = "dnspython-2.3.0.tar.gz", hash = "sha256:224e32b03eb46be70e12ef6d64e0be123a64e621ab4c0822ff6d450d52a540b9"},
+]
+
+[package.extras]
+curio = ["curio (>=1.2,<2.0)", "sniffio (>=1.1,<2.0)"]
+dnssec = ["cryptography (>=2.6,<40.0)"]
+doh = ["h2 (>=4.1.0)", "httpx (>=0.21.1)", "requests (>=2.23.0,<3.0.0)", "requests-toolbelt (>=0.9.1,<0.11.0)"]
+doq = ["aioquic (>=0.9.20)"]
+idna = ["idna (>=2.1,<4.0)"]
+trio = ["trio (>=0.14,<0.23)"]
+wmi = ["wmi (>=1.5.1,<2.0.0)"]
+
+[[package]]
+name = "joblib"
+version = "1.2.0"
+description = "Lightweight pipelining with Python functions"
+category = "main"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "joblib-1.2.0-py3-none-any.whl", hash = "sha256:091138ed78f800342968c523bdde947e7a305b8594b910a0fea2ab83c3c6d385"},
+    {file = "joblib-1.2.0.tar.gz", hash = "sha256:e1cee4a79e4af22881164f218d4311f60074197fb707e082e803b61f6d137018"},
+]
+
+[[package]]
+name = "lazy-object-proxy"
+version = "1.9.0"
+description = "A fast and thorough lazy object proxy."
+category = "main"
+optional = false
+python-versions = ">=3.7"
+files = [
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+[[package]]
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+category = "main"
+optional = false
+python-versions = ">=3.7"
+files = [
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+[package.dependencies]
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+regex = ">=2021.8.3"
+tqdm = "*"
+
+[package.extras]
+all = ["matplotlib", "numpy", "pyparsing", "python-crfsuite", "requests", "scikit-learn", "scipy", "twython"]
+corenlp = ["requests"]
+machine-learning = ["numpy", "python-crfsuite", "scikit-learn", "scipy"]
+plot = ["matplotlib"]
+tgrep = ["pyparsing"]
+twitter = ["twython"]
+
+[[package]]
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+version = "4.3.3"
+description = "Python driver for MongoDB <http://www.mongodb.org>"
+category = "main"
+optional = false
+python-versions = ">=3.7"
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+]
+
+[[package]]
+name = "tqdm"
+version = "4.64.1"
+description = "Fast, Extensible Progress Meter"
+category = "main"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
+files = [
+    {file = "tqdm-4.64.1-py2.py3-none-any.whl", hash = "sha256:6fee160d6ffcd1b1c68c65f14c829c22832bc401726335ce92c52d395944a6a1"},
+    {file = "tqdm-4.64.1.tar.gz", hash = "sha256:5f4f682a004951c1b450bc753c710e9280c5746ce6ffedee253ddbcbf54cf1e4"},
+]
+
+[package.dependencies]
+colorama = {version = "*", markers = "platform_system == \"Windows\""}
+
+[package.extras]
+dev = ["py-make (>=0.1.0)", "twine", "wheel"]
+notebook = ["ipywidgets (>=6)"]
+slack = ["slack-sdk"]
+telegram = ["requests"]
+
+[metadata]
+lock-version = "2.0"
+python-versions = "^3.10"
+content-hash = "baf82d3820a17be0b6fcd6b31d1627a6ab198c9c094a2ee0fc2b0caca2659a72"
diff --git a/pyproject.toml b/pyproject.toml
index c29cc6b..06b5a44 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -132,6 +132,9 @@ classifiers = [
 #          3.10.1  →  == 3.10.1
 
 python = "^3.10"
+pymongo = "^4.3.3"
+nltk = "^3.8.1"
+cfig = {extras = ["cli"], version = "^0.3.0"}
 
 
 
diff --git a/unimore-bda-6.iml b/unimore-bda-6.iml
index 9a5cfce..7616de1 100644
--- a/unimore-bda-6.iml
+++ b/unimore-bda-6.iml
@@ -2,7 +2,12 @@
 <module type="GENERAL_MODULE" version="4">
   <component name="NewModuleRootManager" inherit-compiler-output="true">
     <exclude-output />
-    <content url="file://$MODULE_DIR$" />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/unimore_bda_6" isTestSource="false" />
+      <excludeFolder url="file://$MODULE_DIR$/data/db" />
+      <excludeFolder url="file://$MODULE_DIR$/data/raw" />
+    </content>
+    <orderEntry type="jdk" jdkName="Poetry (unimore-bda-6)" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>
\ No newline at end of file
diff --git a/unimore_bda_6/__main__.py b/unimore_bda_6/__main__.py
index a015126..d577504 100644
--- a/unimore_bda_6/__main__.py
+++ b/unimore_bda_6/__main__.py
@@ -1,4 +1,5 @@
-# If you are building an **application**, use this file to run code!
+from .database import create_mongo_client_from_config
+
 
 def main():
     pass
diff --git a/unimore_bda_6/analysis.py b/unimore_bda_6/analysis.py
new file mode 100644
index 0000000..7a64c78
--- /dev/null
+++ b/unimore_bda_6/analysis.py
@@ -0,0 +1,14 @@
+import nltk
+import nltk.sentiment
+
+
+def create_sentiment_analysis_model() -> ntlk.sentiment.SentimentAnalyzer:
+    analyzer = nltk.sentiment.SentimentAnalyzer()
+
+
+def train():
+    ...
+
+
+def test():
+    ...
diff --git a/unimore_bda_6/config.py b/unimore_bda_6/config.py
new file mode 100644
index 0000000..5e5540d
--- /dev/null
+++ b/unimore_bda_6/config.py
@@ -0,0 +1,37 @@
+import cfig
+
+config = cfig.Configuration()
+
+
+@config.required()
+def MONGO_HOST(val: str) -> str:
+    """
+    The hostname of the MongoDB database to connect to.
+    """
+    return val
+
+
+@config.required()
+def MONGO_PORT(val: str) -> str:
+    """
+    The port of the MongoDB database to connect to.
+    """
+    return val
+
+
+@config.required()
+def TRAINING_SET_SIZE(val: str) -> int:
+    """
+    The number of reviews from each category to fetch for the training set.
+    """
+    try:
+        return int(val)
+    except ValueError:
+        raise cfig.InvalidValueError("Not an int.")
+
+
+__all__ = (
+    "config",
+    "MONGO_HOST",
+    "MONGO_PORT",
+)
diff --git a/unimore_bda_6/database.py b/unimore_bda_6/database.py
new file mode 100644
index 0000000..d4bcd6c
--- /dev/null
+++ b/unimore_bda_6/database.py
@@ -0,0 +1,101 @@
+import typing as t
+import pymongo
+import pymongo.collection
+import contextlib
+import bson
+
+from .config import MONGO_HOST, MONGO_PORT
+
+
+class Review(t.TypedDict):
+    _id: bson.ObjectId
+    reviewerID: str
+    asin: str
+    reviewerName: str
+    helpful: tuple[int, int]
+    reviewText: str
+    overall: float
+    summary: str
+    unixReviewTime: int
+    reviewTime: str
+
+
+@contextlib.contextmanager
+def mongo_client_from_config() -> t.ContextManager[pymongo.MongoClient]:
+    """
+    Create a new MongoDB client and yield it.
+    """
+    client = pymongo.MongoClient(
+        host=MONGO_HOST.__resolved__,
+        port=MONGO_PORT.__resolved__,
+    )
+    yield client
+    client.close()
+
+
+@contextlib.contextmanager
+def mongo_reviews_collection_from_config() -> pymongo.collection.Collection[Review]:
+    """
+    Create a new MongoDB client, access the ``reviews`` collection in the ``reviews`` database, and yield it.
+    """
+    with mongo_client_from_config() as db:
+        yield db.reviews.reviews
+
+
+def sample_reviews(reviews: pymongo.collection.Collection, amount: int) -> t.Iterable[Review]:
+    """
+    Get ``amount`` random reviews from the ``reviews`` collection.
+    """
+
+    return reviews.aggregate([
+        {"$sample": {"size": amount}}
+    ])
+
+
+def sample_reviews_by_rating(reviews: pymongo.collection.Collection, rating: float, amount: int) -> t.Iterable[Review]:
+    """
+    Get ``amount`` random reviews with ``rating`` stars from the ``reviews`` collection.
+    """
+
+    return reviews.aggregate([
+        {"$filter": {"overall": rating}},
+        {"$sample": {"size": amount}},
+    ])
+
+
+def sample_reviews_by_rating_polar(reviews: pymongo.collection.Collection, amount: int) -> t.Iterable[Review]:
+    """
+    Get ``amount`` random reviews with either a 5-star or 1-star rating from the ``reviews`` collection.
+    """
+
+    return reviews.aggregate([
+        {"$filter": {"overall": {"$or": [1.0, 5.0]}}},
+        {"$sample": {"size": amount}},
+    ])
+
+
+def get_reviews_training_set(reviews: pymongo.collection.Collection, amount: int) -> t.Iterable[Review]:
+    """
+    Get the subset of reviews that should act as training set.
+    """
+
+    # Handle odd numbers
+    positive_amount: int = amount // 2
+    negative_amount: int = amount - positive_amount
+
+    # Sample the required reviews
+    positive = sample_reviews_by_rating(reviews, 5.0, positive_amount)
+    negative = sample_reviews_by_rating(reviews, 1.0, negative_amount)
+
+    # Randomness here does not matter, so just merge the lists
+    both = [*positive, *negative]
+
+    return both
+
+
+def get_reviews_test_set(reviews: pymongo.collection.Collection, amount: int) -> t.Iterable[Review]:
+    """
+    Get the subset of reviews that should act as test set.
+    """
+
+    return sample_reviews_by_rating_polar(reviews, amount)