Solar Powered, Cellar Lighting Arduino Control

1#define lights 9 //connects to gate of mosfet
2#define reed 5
3int  pot = A0;
4
5void setup() {
6  Serial.begin(9600);
7  pinMode(lights, OUTPUT);
8  pinMode(reed, INPUT_PULLUP);
9}
10
11void loop() {
12  
13  
14  delay(200);
15  int control = analogRead(pot);
16  control = map(control, 0, 1023, 0, 255);
17  Serial.println(control);
18  delay(200);
19  //analogWrite(lights, control);
20
21  int trig = digitalRead(reed);
22  if(trig == LOW && control <= 15){
23    Serial.println("door  open");
24    analogWrite(lights, 255);
25    delay(5000); 
26    analogWrite(lights,  0);
27    delay(25000);     
28    }
29    
30  if(trig == LOW && control >=  15){
31    Serial.println("door open but using");
32    analogWrite(lights,  control);
33    }
34    
35  if(trig == HIGH && control >= 30){
36    Serial.print("closed  but inside");
37    analogWrite(lights, control);
38   }
39   
40  if(trig  == HIGH && control <= 10){
41    Serial.print("closed shut off lights");
42    analogWrite(lights, 0);
43  }
44}
45