From 1650fb977cf0206610a98c4d079c0fb125cfad20 Mon Sep 17 00:00:00 2001
From: Shadrack <skiplagat8018@gmail.com>
Date: Tue, 4 Mar 2025 11:18:41 +0300
Subject: [PATCH] completed code challenge

---
 Pipfile                                |   2 +-
 Pipfile.lock                           | 190 +++++++++++++++++++------
 lib/__pycache__/models.cpython-313.pyc | Bin 0 -> 6439 bytes
 lib/debug.py                           |  56 +++++++-
 lib/freebies.db                        | Bin 20480 -> 32768 bytes
 lib/models.py                          |  92 +++++++++++-
 lib/seed.py                            |  62 +++++++-
 lib/your_database.db                   |   0
 8 files changed, 348 insertions(+), 54 deletions(-)
 create mode 100644 lib/__pycache__/models.cpython-313.pyc
 create mode 100644 lib/your_database.db

diff --git a/Pipfile b/Pipfile
index 63c79cd98..5bda56b8b 100644
--- a/Pipfile
+++ b/Pipfile
@@ -8,7 +8,7 @@ alembic = "1.8.1"
 importlib-metadata = "6.0.0"
 importlib-resources = "5.10.0"
 ipdb = "0.13.9"
-sqlalchemy = "1.4.42"
+sqlalchemy = "*"
 
 [dev-packages]
 
diff --git a/Pipfile.lock b/Pipfile.lock
index 3923f4a97..f9e1c0743 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "fa62c636b7ae5acb4993fc7b007a651c55b562aa29962a9a8585ec314b352ae6"
+            "sha256": "7fa3316bc11173caf22a4489dce1c5b998e8410b8a3a2cffd1d3590de64e857f"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -61,6 +61,85 @@
             ],
             "version": "==1.2.0"
         },
+        "greenlet": {
+            "hashes": [
+                "sha256:0153404a4bb921f0ff1abeb5ce8a5131da56b953eda6e14b88dc6bbc04d2049e",
+                "sha256:03a088b9de532cbfe2ba2034b2b85e82df37874681e8c470d6fb2f8c04d7e4b7",
+                "sha256:04b013dc07c96f83134b1e99888e7a79979f1a247e2a9f59697fa14b5862ed01",
+                "sha256:05175c27cb459dcfc05d026c4232f9de8913ed006d42713cb8a5137bd49375f1",
+                "sha256:09fc016b73c94e98e29af67ab7b9a879c307c6731a2c9da0db5a7d9b7edd1159",
+                "sha256:0bbae94a29c9e5c7e4a2b7f0aae5c17e8e90acbfd3bf6270eeba60c39fce3563",
+                "sha256:0fde093fb93f35ca72a556cf72c92ea3ebfda3d79fc35bb19fbe685853869a83",
+                "sha256:1443279c19fca463fc33e65ef2a935a5b09bb90f978beab37729e1c3c6c25fe9",
+                "sha256:1776fd7f989fc6b8d8c8cb8da1f6b82c5814957264d1f6cf818d475ec2bf6395",
+                "sha256:1d3755bcb2e02de341c55b4fca7a745a24a9e7212ac953f6b3a48d117d7257aa",
+                "sha256:23f20bb60ae298d7d8656c6ec6db134bca379ecefadb0b19ce6f19d1f232a942",
+                "sha256:275f72decf9932639c1c6dd1013a1bc266438eb32710016a1c742df5da6e60a1",
+                "sha256:2846930c65b47d70b9d178e89c7e1a69c95c1f68ea5aa0a58646b7a96df12441",
+                "sha256:3319aa75e0e0639bc15ff54ca327e8dc7a6fe404003496e3c6925cd3142e0e22",
+                "sha256:346bed03fe47414091be4ad44786d1bd8bef0c3fcad6ed3dee074a032ab408a9",
+                "sha256:36b89d13c49216cadb828db8dfa6ce86bbbc476a82d3a6c397f0efae0525bdd0",
+                "sha256:37b9de5a96111fc15418819ab4c4432e4f3c2ede61e660b1e33971eba26ef9ba",
+                "sha256:396979749bd95f018296af156201d6211240e7a23090f50a8d5d18c370084dc3",
+                "sha256:3b2813dc3de8c1ee3f924e4d4227999285fd335d1bcc0d2be6dc3f1f6a318ec1",
+                "sha256:411f015496fec93c1c8cd4e5238da364e1da7a124bcb293f085bf2860c32c6f6",
+                "sha256:47da355d8687fd65240c364c90a31569a133b7b60de111c255ef5b606f2ae291",
+                "sha256:48ca08c771c268a768087b408658e216133aecd835c0ded47ce955381105ba39",
+                "sha256:4afe7ea89de619adc868e087b4d2359282058479d7cfb94970adf4b55284574d",
+                "sha256:4ce3ac6cdb6adf7946475d7ef31777c26d94bccc377e070a7986bd2d5c515467",
+                "sha256:4ead44c85f8ab905852d3de8d86f6f8baf77109f9da589cb4fa142bd3b57b475",
+                "sha256:54558ea205654b50c438029505def3834e80f0869a70fb15b871c29b4575ddef",
+                "sha256:5e06afd14cbaf9e00899fae69b24a32f2196c19de08fcb9f4779dd4f004e5e7c",
+                "sha256:62ee94988d6b4722ce0028644418d93a52429e977d742ca2ccbe1c4f4a792511",
+                "sha256:63e4844797b975b9af3a3fb8f7866ff08775f5426925e1e0bbcfe7932059a12c",
+                "sha256:6510bf84a6b643dabba74d3049ead221257603a253d0a9873f55f6a59a65f822",
+                "sha256:667a9706c970cb552ede35aee17339a18e8f2a87a51fba2ed39ceeeb1004798a",
+                "sha256:6ef9ea3f137e5711f0dbe5f9263e8c009b7069d8a1acea822bd5e9dae0ae49c8",
+                "sha256:7017b2be767b9d43cc31416aba48aab0d2309ee31b4dbf10a1d38fb7972bdf9d",
+                "sha256:7124e16b4c55d417577c2077be379514321916d5790fa287c9ed6f23bd2ffd01",
+                "sha256:73aaad12ac0ff500f62cebed98d8789198ea0e6f233421059fa68a5aa7220145",
+                "sha256:77c386de38a60d1dfb8e55b8c1101d68c79dfdd25c7095d51fec2dd800892b80",
+                "sha256:7876452af029456b3f3549b696bb36a06db7c90747740c5302f74a9e9fa14b13",
+                "sha256:7939aa3ca7d2a1593596e7ac6d59391ff30281ef280d8632fa03d81f7c5f955e",
+                "sha256:8320f64b777d00dd7ccdade271eaf0cad6636343293a25074cc5566160e4de7b",
+                "sha256:85f3ff71e2e60bd4b4932a043fbbe0f499e263c628390b285cb599154a3b03b1",
+                "sha256:8b8b36671f10ba80e159378df9c4f15c14098c4fd73a36b9ad715f057272fbef",
+                "sha256:93147c513fac16385d1036b7e5b102c7fbbdb163d556b791f0f11eada7ba65dc",
+                "sha256:935e943ec47c4afab8965954bf49bfa639c05d4ccf9ef6e924188f762145c0ff",
+                "sha256:94b6150a85e1b33b40b1464a3f9988dcc5251d6ed06842abff82e42632fac120",
+                "sha256:94ebba31df2aa506d7b14866fed00ac141a867e63143fe5bca82a8e503b36437",
+                "sha256:95ffcf719966dd7c453f908e208e14cde192e09fde6c7186c8f1896ef778d8cd",
+                "sha256:98884ecf2ffb7d7fe6bd517e8eb99d31ff7855a840fa6d0d63cd07c037f6a981",
+                "sha256:99cfaa2110534e2cf3ba31a7abcac9d328d1d9f1b95beede58294a60348fba36",
+                "sha256:9e8f8c9cb53cdac7ba9793c276acd90168f416b9ce36799b9b885790f8ad6c0a",
+                "sha256:a0dfc6c143b519113354e780a50381508139b07d2177cb6ad6a08278ec655798",
+                "sha256:b2795058c23988728eec1f36a4e5e4ebad22f8320c85f3587b539b9ac84128d7",
+                "sha256:b42703b1cf69f2aa1df7d1030b9d77d3e584a70755674d60e710f0af570f3761",
+                "sha256:b7cede291382a78f7bb5f04a529cb18e068dd29e0fb27376074b6d0317bf4dd0",
+                "sha256:b8a678974d1f3aa55f6cc34dc480169d58f2e6d8958895d68845fa4ab566509e",
+                "sha256:b8da394b34370874b4572676f36acabac172602abf054cbc4ac910219f3340af",
+                "sha256:c3a701fe5a9695b238503ce5bbe8218e03c3bcccf7e204e455e7462d770268aa",
+                "sha256:c4aab7f6381f38a4b42f269057aee279ab0fc7bf2e929e3d4abfae97b682a12c",
+                "sha256:ca9d0ff5ad43e785350894d97e13633a66e2b50000e8a183a50a88d834752d42",
+                "sha256:d0028e725ee18175c6e422797c407874da24381ce0690d6b9396c204c7f7276e",
+                "sha256:d21e10da6ec19b457b82636209cbe2331ff4306b54d06fa04b7c138ba18c8a81",
+                "sha256:d5e975ca70269d66d17dd995dafc06f1b06e8cb1ec1e9ed54c1d1e4a7c4cf26e",
+                "sha256:da7a9bff22ce038e19bf62c4dd1ec8391062878710ded0a845bcf47cc0200617",
+                "sha256:db32b5348615a04b82240cc67983cb315309e88d444a288934ee6ceaebcad6cc",
+                "sha256:dcc62f31eae24de7f8dce72134c8651c58000d3b1868e01392baea7c32c247de",
+                "sha256:dfc59d69fc48664bc693842bd57acfdd490acafda1ab52c7836e3fc75c90a111",
+                "sha256:e347b3bfcf985a05e8c0b7d462ba6f15b1ee1c909e2dcad795e49e91b152c383",
+                "sha256:e4d333e558953648ca09d64f13e6d8f0523fa705f51cae3f03b5983489958c70",
+                "sha256:ed10eac5830befbdd0c32f83e8aa6288361597550ba669b04c48f0f9a2c843c6",
+                "sha256:efc0f674aa41b92da8c49e0346318c6075d734994c3c4e4430b1c3f853e498e4",
+                "sha256:f1695e76146579f8c06c1509c7ce4dfe0706f49c6831a817ac04eebb2fd02011",
+                "sha256:f1d4aeb8891338e60d1ab6127af1fe45def5259def8094b9c7e34690c8858803",
+                "sha256:f406b22b7c9a9b4f8aa9d2ab13d6ae0ac3e85c9a809bd590ad53fed2bf70dc79",
+                "sha256:f6ff3b14f2df4c41660a7dec01045a045653998784bf8cfcb5a525bdffffbc8f"
+            ],
+            "markers": "python_version >= '3.7'",
+            "version": "==3.1.1"
+        },
         "importlib-metadata": {
             "hashes": [
                 "sha256:7efb448ec9a5e313a57655d35aa54cd3e01b7e1fbcf72dce1bf06119420f5bad",
@@ -236,50 +315,67 @@
         },
         "sqlalchemy": {
             "hashes": [
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+                "sha256:b79ee64d01d05a5476d5cceb3c27b5535e6bb84ee0f872ba60d9a8cd4d0e6579",
+                "sha256:b87a90f14c68c925817423b0424381f0e16d80fc9a1a1046ef202ab25b19a444",
+                "sha256:bf89e0e4a30714b357f5d46b6f20e0099d38b30d45fa68ea48589faf5f12f62d",
+                "sha256:c058b84c3b24812c859300f3b5abf300daa34df20d4d4f42e9652a4d1c48c8a4",
+                "sha256:c09a6ea87658695e527104cf857c70f79f14e9484605e205217aae0ec27b45fc",
+                "sha256:c57b8e0841f3fce7b703530ed70c7c36269c6d180ea2e02e36b34cb7288c50c7",
+                "sha256:c9cea5b756173bb86e2235f2f871b406a9b9d722417ae31e5391ccaef5348f2c",
+                "sha256:cb39ed598aaf102251483f3e4675c5dd6b289c8142210ef76ba24aae0a8f8aba",
+                "sha256:e036549ad14f2b414c725349cce0772ea34a7ab008e9cd67f9084e4f371d1f32",
+                "sha256:e185ea07a99ce8b8edfc788c586c538c4b1351007e614ceb708fd01b095ef33e",
+                "sha256:e5a4d82bdb4bf1ac1285a68eab02d253ab73355d9f0fe725a97e1e0fa689decb",
+                "sha256:eae27ad7580529a427cfdd52c87abb2dfb15ce2b7a3e0fc29fbb63e2ed6f8120",
+                "sha256:ecef029b69843b82048c5b347d8e6049356aa24ed644006c9a9d7098c3bd3bfd",
+                "sha256:ee3bee874cb1fadee2ff2b79fc9fc808aa638670f28b2145074538d4a6a5028e",
+                "sha256:f0d3de936b192980209d7b5149e3c98977c3810d401482d05fb6d668d53c1c63",
+                "sha256:f53c0d6a859b2db58332e0e6a921582a02c1677cc93d4cbb36fdf49709b327b2",
+                "sha256:f9d57f1b3061b3e21476b0ad5f0397b112b94ace21d1f439f2db472e568178ae"
             ],
             "index": "pypi",
-            "version": "==1.4.46"
+            "markers": "python_version >= '3.7'",
+            "version": "==2.0.38"
         },
         "stack-data": {
             "hashes": [
@@ -304,6 +400,14 @@
             "markers": "python_version >= '3.7'",
             "version": "==5.8.1"
         },
+        "typing-extensions": {
+            "hashes": [
+                "sha256:04e5ca0351e0f3f85c6853954072df659d0d13fac324d0072316b67d7794700d",
+                "sha256:1a7ead55c7e559dd4dee8856e3a88b41225abfe1ce8df57b7c13915fe121ffb8"
+            ],
+            "markers": "python_version >= '3.8'",
+            "version": "==4.12.2"
+        },
         "wcwidth": {
             "hashes": [
                 "sha256:795b138f6875577cd91bba52baf9e445cd5118fd32723b460e30a0af30ea230e",
diff --git a/lib/__pycache__/models.cpython-313.pyc b/lib/__pycache__/models.cpython-313.pyc
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diff --git a/lib/debug.py b/lib/debug.py
index 4f922eb69..51b647c8f 100644
--- a/lib/debug.py
+++ b/lib/debug.py
@@ -1,9 +1,57 @@
 #!/usr/bin/env python3
 
-from sqlalchemy import create_engine
+from models import Company, Dev, Freebie, session
 
-from models import Company, Dev
+def fetch_dev_by_name(name):
+    
+    dev = session.query(Dev).filter_by(name=name).first()
+    if dev is None:
+        print(f"No developer found with the name: {name}")
+    return dev
 
-if __name__ == '__main__':
-    engine = create_engine('sqlite:///freebies.db')
+
+def fetch_freebie():
+    
+    freebie = session.query(Freebie).first()
+    if freebie is None:
+        print("No freebies found in the database.")
+    return freebie
+
+
+def fetch_oldest_company():
+    
+    oldest_company = Company.oldest_company()
+    if oldest_company is None:
+        print("No companies found in the database.")
+    return oldest_company
+
+
+def main():
+    
+    # interactive debugger session
     import ipdb; ipdb.set_trace()
+
+    # Fetching Developer (Alice)
+    dev = fetch_dev_by_name('Alice')
+    if dev:
+        print(f"Developer: {dev.name}")
+        print("Freebies associated with Alice:")
+        for freebie in dev.freebies:
+            print(freebie.print_details())
+
+    # Fetching Freebie and print its details
+    freebie = fetch_freebie()
+    if freebie:
+        print(f"Freebie details: {freebie.print_details()}")
+
+    # Finding the oldest company and print its details
+    oldest_company = fetch_oldest_company()
+    if oldest_company:
+        print(f"Oldest company: {oldest_company.name}, Founded in {oldest_company.founding_year}")
+
+    # Closes the session after all operations
+    session.close()
+
+
+if __name__ == "__main__":
+    main()
diff --git a/lib/freebies.db b/lib/freebies.db
index 12beb1c963e832db481e7a7493e3029e691ac4dc..3e02b1430fe7d65102ab6d5fafe205fa64126b0b 100644
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Pd!@LUCE*YMq67f|h^h`z

diff --git a/lib/models.py b/lib/models.py
index 2681bee5a..bd0be9a3b 100644
--- a/lib/models.py
+++ b/lib/models.py
@@ -1,29 +1,113 @@
 from sqlalchemy import ForeignKey, Column, Integer, String, MetaData
-from sqlalchemy.orm import relationship, backref
+from sqlalchemy.orm import relationship, sessionmaker
 from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy import create_engine
 
+# Name convention for foreign keys
 convention = {
     "fk": "fk_%(table_name)s_%(column_0_name)s_%(referred_table_name)s",
 }
 metadata = MetaData(naming_convention=convention)
 
+# Basing class for declarative models
 Base = declarative_base(metadata=metadata)
 
+# Database URL and session setup
+DATABASE_URL = 'sqlite:///freebies.db'  # SQLite database URL
+engine = create_engine(DATABASE_URL, echo=True)  # echo=True to log SQL queries
+Session = sessionmaker(bind=engine)
+session = Session()
+
+
+# Company Model
 class Company(Base):
     __tablename__ = 'companies'
 
     id = Column(Integer(), primary_key=True)
-    name = Column(String())
-    founding_year = Column(Integer())
+    name = Column(String(), nullable=False)
+    founding_year = Column(Integer(), nullable=False)
+
+    # Relationships
+    freebies = relationship('Freebie', backref='company', cascade="all, delete-orphan")
+    devs = relationship('Dev', secondary='dev_freebies', backref='companies')
 
     def __repr__(self):
+        
         return f'<Company {self.name}>'
 
+    @classmethod
+    def oldest_company(cls):
+        
+        return session.query(cls).order_by(cls.founding_year).first()
+
+    def give_freebie(self, dev, item_name, value):
+        
+        freebie = Freebie(dev_id=dev.id, company_id=self.id, item_name=item_name, value=value)
+        session.add(freebie)
+        session.commit()
+
+
+# Dev Model
 class Dev(Base):
     __tablename__ = 'devs'
 
     id = Column(Integer(), primary_key=True)
-    name= Column(String())
+    name = Column(String(), nullable=False)
+
+    # Relationships
+    freebies = relationship('Freebie', backref='dev', cascade="all, delete-orphan")
 
     def __repr__(self):
+        
         return f'<Dev {self.name}>'
+
+    def received_one(self, item_name):
+        
+        return any(freebie.item_name == item_name for freebie in self.freebies)
+
+    def give_away(self, dev, freebie):
+        
+        if freebie.dev_id == self.id:
+            freebie.dev_id = dev.id
+            session.commit()
+
+
+# Freebie Model
+class Freebie(Base):
+    __tablename__ = 'freebies'
+
+    id = Column(Integer(), primary_key=True)
+    item_name = Column(String(), nullable=False)
+    value = Column(Integer(), nullable=False)
+    dev_id = Column(Integer(), ForeignKey('devs.id'), nullable=False)
+    company_id = Column(Integer(), ForeignKey('companies.id'), nullable=False)
+
+    def __repr__(self):
+        
+        return f'<Freebie {self.item_name} from {self.company.name}>'
+
+    def print_details(self):
+        
+        return f"{self.dev.name} owns a {self.item_name} from {self.company.name}"
+
+
+# Association Table for Many-to-Many Relationship (Dev <-> Company)
+class DevFreebies(Base):
+    __tablename__ = 'dev_freebies'
+
+    dev_id = Column(Integer(), ForeignKey('devs.id'), primary_key=True)
+    company_id = Column(Integer(), ForeignKey('companies.id'), primary_key=True)
+
+    # Relationships (optional, if you want to access directly)
+    dev = relationship('Dev', backref='dev_freebies')
+    company = relationship('Company', backref='dev_freebies')
+
+
+# Initialize the database (create tables)
+def initialize_db():
+    
+    Base.metadata.create_all(engine)
+
+
+if __name__ == "__main__":
+    initialize_db()
diff --git a/lib/seed.py b/lib/seed.py
index b16becbbb..b607f4377 100644
--- a/lib/seed.py
+++ b/lib/seed.py
@@ -1,3 +1,61 @@
-#!/usr/bin/env python3
+from models import Company, Dev, Freebie, session, initialize_db
 
-# Script goes here!
+def create_companies():
+   
+    companies = [
+        Company(name="TechCorp", founding_year=1999),
+        Company(name="DevGoods", founding_year=2005),
+        Company(name="WebSolutions", founding_year=2010)
+    ]
+    return companies
+
+
+def create_devs():
+    
+    devs = [
+        Dev(name="Alice"),
+        Dev(name="Bob"),
+        Dev(name="Charlie")
+    ]
+    return devs
+
+
+def seed_freebies(companies, devs):
+    
+    # Company1 gives freebies to Alice and Bob
+    companies[0].give_freebie(devs[0], "T-Shirt", 10)
+    companies[0].give_freebie(devs[1], "Mug", 5)
+
+    # Company2 gives freebies to Alice and Charlie
+    companies[1].give_freebie(devs[0], "Laptop Bag", 25)
+    companies[1].give_freebie(devs[2], "T-Shirt", 10)
+
+    # Company3 gives freebies to Bob and Charlie
+    companies[2].give_freebie(devs[1], "Notebook", 15)
+    companies[2].give_freebie(devs[2], "Laptop", 100)
+
+
+def seed():
+    
+    # Initializing database (create tables if they don't exist already)
+    initialize_db()
+
+    # Creating and add companies and developers
+    companies = create_companies()
+    devs = create_devs()
+
+    # Adding companies and devs to session
+    session.add_all(companies + devs)
+    session.commit()
+
+    # Assigning freebies
+    seed_freebies(companies, devs)
+
+    # Commiting session to save changes to the database
+    session.commit()
+
+    print("Database seeded successfully!")
+
+
+if __name__ == "__main__":
+    seed()
diff --git a/lib/your_database.db b/lib/your_database.db
new file mode 100644
index 000000000..e69de29bb