first pass on classes model, move database.sql to first migration file to implement migrations

internal/models/classes/classes.go

@@ -0,0 +1,69 @@
+package classes
+
+import (
+	"dk/internal/database"
+	"fmt"
+	"strings"
+)
+
+type Classes struct {
+	ID      int
+	Name    string
+	Lore    string
+	BaseHP  int
+	BaseMP  int
+	BaseSTR int
+	BaseDEX int
+	RateHP  int
+	RateMP  int
+	RateSTR int
+	RateDEX int
+}
+
+func New() *Classes {
+	return &Classes{
+		BaseHP:  15,
+		BaseMP:  10,
+		BaseSTR: 1,
+		BaseDEX: 1,
+		RateHP:  2,
+		RateMP:  2,
+		RateSTR: 2,
+		RateDEX: 2,
+	}
+}
+
+func (c *Classes) Validate() error {
+	if strings.TrimSpace(c.Name) == "" {
+		return fmt.Errorf("class name cannot be empty")
+	}
+	if c.BaseHP < 1 {
+		return fmt.Errorf("class base HP must be at least 1")
+	}
+	if c.BaseMP < 0 {
+		return fmt.Errorf("class base MP must be at least 0")
+	}
+	if c.BaseSTR < 0 {
+		return fmt.Errorf("class base strength must be at least 0")
+	}
+	if c.BaseDEX < 0 {
+		return fmt.Errorf("class base dexterity must be at least 0")
+	}
+	if c.RateHP < 0 {
+		return fmt.Errorf("class HP rate must be at least 0")
+	}
+	if c.RateMP < 0 {
+		return fmt.Errorf("class MP rate must be at least 0")
+	}
+	if c.RateSTR < 0 {
+		return fmt.Errorf("class strength rate must be at least 0")
+	}
+	if c.RateDEX < 0 {
+		return fmt.Errorf("class dexterity rate must be at least 0")
+	}
+	return nil
+}
+
+func (c *Classes) Delete() error {
+	return database.Exec("DELETE FROM classes WHERE id = %d", c.ID)
+}

sql/1_create_database.sql

@@ -109,21 +109,20 @@ CREATE TABLE classes (
 	'id' INTEGER PRIMARY KEY AUTOINCREMENT,
 	'name' TEXT NOT NULL,
 	'lore' TEXT NOT NULL,
-	'exp_rate' INTEGER NOT NULL DEFAULT 3,
 	'base_hp'  INTEGER NOT NULL DEFAULT 15,
 	'base_mp'  INTEGER NOT NULL DEFAULT 10,
 	'base_str' INTEGER NOT NULL DEFAULT 1,
 	'base_dex' INTEGER NOT NULL DEFAULT 1,
-	'hp_rate'  INTEGER NOT NULL DEFAULT 2,
-	'mp_rate'  INTEGER NOT NULL DEFAULT 2,
-	'str_rate' INTEGER NOT NULL DEFAULT 2,
-	'dex_rate' INTEGER NOT NULL DEFAULT 2
+	'rate_hp'  INTEGER NOT NULL DEFAULT 2,
+	'rate_mp'  INTEGER NOT NULL DEFAULT 2,
+	'rate_str' INTEGER NOT NULL DEFAULT 2,
+	'rate_dex' INTEGER NOT NULL DEFAULT 2
 );
 INSERT INTO classes VALUES
-(1, 'Adventurer', '', 3, 15, 10, 4, 4, 2, 2, 2, 2),
-(2, 'Mage',       '', 1, 10, 15, 1, 7, 1, 3, 1, 2),
-(3, 'Warrior',    '', 2, 20,  5, 7, 1, 3, 1, 3, 1),
-(4, 'Paladin',    '', 5, 15, 15, 5, 5, 2, 2, 2, 2);
+(1, 'Adventurer', '', 15, 10, 4, 4, 2, 2, 2, 2),
+(2, 'Mage',       '', 10, 15, 1, 7, 1, 3, 1, 2),
+(3, 'Warrior',    '', 20,  5, 7, 1, 3, 1, 3, 1),
+(4, 'Paladin',    '', 15, 15, 5, 5, 2, 2, 2, 2);
 
 DROP TABLE IF EXISTS monsters;
 CREATE TABLE monsters (