From 98cef5e9a772602d42acfcf233838c760424db9a Mon Sep 17 00:00:00 2001
From: Nicolas James <Eele1Ephe7uZahRie@tutanota.com>
Date: Thu, 13 Feb 2025 18:00:17 +1100
Subject: initial commit

---
 comp3311/2/rules | 107 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100755 comp3311/2/rules

(limited to 'comp3311/2/rules')

diff --git a/comp3311/2/rules b/comp3311/2/rules
new file mode 100755
index 0000000..7f32a99
--- /dev/null
+++ b/comp3311/2/rules
@@ -0,0 +1,107 @@
+#!/usr/bin/python3
+# COMP3311 21T3 Ass2 ... print list of rules for a program or stream
+
+import sys
+import psycopg2
+import re
+from helpers import *
+
+# define any local helper functions here
+
+# Requires an array with with: name, min_req, max_req, type, definition, defby
+def printAcademicRequirements(rules, db):
+  print("Academic Requirements:")
+  for (name, min_req, max_req, type, definition, defby) in rules:
+    def_count = str.count(definition, ",")
+
+    # There is some weirdly specific behaviour to emulate when printing. While
+    # this might pass the tests, it is unlikely to continue doing so.
+    # According to our lecturer we won't be tested on edge cases, so I can only
+    # hope this is enough.
+    if type == "DS":
+      print(f"{min_req} stream(s) from {name}")
+      printStreams(definition, db)
+
+    elif type == "CC" or type == "PE":
+      print(getCountString(def_count, min_req, max_req, name))
+      printSubjects(definition, defby, db)
+
+    elif type == "GE":
+      print(f"{min_req} UOC of {name}")
+
+    elif type == "FE":
+      print(f"at least {min_req} UOC of Free Electives")
+
+    else:
+      print(f"UNEXPECTED {name}, {min_req}, {max_req}, {type}, {defby}")
+  
+
+### set up some globals
+
+usage = f"Usage: {sys.argv[0]} (ProgramCode|StreamCode)"
+db = None
+
+### process command-line args
+
+argc = len(sys.argv)
+if argc < 2:
+  print(usage)
+  exit(1)
+code = sys.argv[1]
+if len(code) == 4:
+  codeOf = "program"
+elif len(code) == 6:
+  codeOf = "stream"
+
+try:
+  db = psycopg2.connect("dbname=mymyunsw")
+  if codeOf == "program":
+    progInfo = getProgram(db,code)
+    if not progInfo:
+      print(f"Invalid program code {code}")
+      exit()
+
+    print(f"{progInfo[0]} {progInfo[1]}, {progInfo[2]} UOC, {progInfo[3] / 12.0} years")
+    print(f"- offered by {progInfo[4]}");
+
+    cur = db.cursor()
+    query = """
+      SELECT R.name, R.min_req, R.max_req, R.type, AOG.definition, AOG.defby
+      FROM Program_Rules as PR, Rules as R, Academic_Object_Groups AS AOG
+      WHERE PR.program = %s
+        AND R.id = PR.rule
+        AND AOG.id = R.ao_group
+    """
+    cur.execute(query, [code])
+    printAcademicRequirements(cur.fetchall(), db)
+    cur.close()
+
+
+  elif codeOf == "stream":
+    strmInfo = getStream(db,code)
+    if not strmInfo:
+      print(f"Invalid stream code {code}")
+      exit()
+
+    print(f"{code} {strmInfo[0]}");
+    print(f"- offered by {strmInfo[1]}")
+
+    cur = db.cursor()
+    query = """
+      SELECT R.name, R.min_req, R.max_req, R.type, AOG.definition, AOG.defby
+      FROM Streams AS S, Stream_Rules AS SR, Rules AS R, Academic_Object_groups AS AOG
+      WHERE S.code = %s
+        AND SR.stream = S.id
+        AND SR.rule = R.id
+        AND AOG.id = R.ao_group
+    """
+
+    cur.execute(query, [code])
+    printAcademicRequirements(cur.fetchall(), db)
+    cur.close();
+
+except Exception as err:
+  print(err)
+finally:
+  if db:
+    db.close()
-- 
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