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minefields.go
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minefields.go
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package db
import (
"database/sql"
"database/sql/driver"
"encoding/json"
"fmt"
"time"
"github.com/sirgwain/craig-stars/cs"
)
type MineField struct {
ID int64 `json:"id,omitempty"`
GameID int64 `json:"gameId,omitempty"`
CreatedAt time.Time `json:"createdAt,omitempty"`
UpdatedAt time.Time `json:"updatedAt,omitempty"`
X float64 `json:"x,omitempty"`
Y float64 `json:"y,omitempty"`
Name string `json:"name,omitempty"`
Num int `json:"num,omitempty"`
PlayerNum int `json:"playerNum,omitempty"`
Tags *Tags `json:"tags,omitempty"`
MineFieldType cs.MineFieldType `json:"mineFieldType,omitempty"`
NumMines int `json:"numMines,omitempty"`
Detonate bool `json:"detonate,omitempty"`
Spec *MineFieldSpec `json:"spec,omitempty"`
}
type MineFieldSpec cs.MineFieldSpec
// db serializer to serialize this to JSON
func (item *MineFieldSpec) Value() (driver.Value, error) {
if item == nil {
return nil, nil
}
data, err := json.Marshal(item)
if err != nil {
return nil, err
}
return data, nil
}
// db deserializer to read this from JSON
func (item *MineFieldSpec) Scan(src interface{}) error {
return scanJSON(src, item)
}
// get a mineField by id
func (c *client) GetMineField(id int64) (*cs.MineField, error) {
item := MineField{}
if err := c.reader.Get(&item, "SELECT * FROM mineFields WHERE id = ?", id); err != nil {
if err == sql.ErrNoRows {
return nil, nil
}
return nil, err
}
mineField := c.converter.ConvertMineField(&item)
return mineField, nil
}
func (c *client) GetMineFieldsForPlayer(gameID int64, playerNum int) ([]*cs.MineField, error) {
items := []MineField{}
if err := c.reader.Select(&items, `SELECT * FROM mineFields WHERE gameId = ? AND playerNum = ?`, gameID, playerNum); err != nil {
if err == sql.ErrNoRows {
return []*cs.MineField{}, nil
}
return nil, err
}
results := make([]*cs.MineField, len(items))
for i := range items {
results[i] = c.converter.ConvertMineField(&items[i])
}
return results, nil
}
func (c *client) getMineFieldsForGame(gameID int64) ([]*cs.MineField, error) {
items := []MineField{}
if err := c.reader.Select(&items, `SELECT * FROM mineFields WHERE gameId = ?`, gameID); err != nil {
if err == sql.ErrNoRows {
return []*cs.MineField{}, nil
}
return nil, err
}
results := make([]*cs.MineField, len(items))
for i := range items {
results[i] = c.converter.ConvertMineField(&items[i])
}
return results, nil
}
// create a new game
func (c *client) createMineField(mineField *cs.MineField) error {
item := c.converter.ConvertGameMineField(mineField)
result, err := c.writer.NamedExec(`
INSERT INTO mineFields (
createdAt,
updatedAt,
gameId,
x,
y,
name,
num,
playerNum,
tags,
mineFieldType,
numMines,
detonate,
spec
)
VALUES (
CURRENT_TIMESTAMP,
CURRENT_TIMESTAMP,
:gameId,
:x,
:y,
:name,
:num,
:playerNum,
:tags,
:mineFieldType,
:numMines,
:detonate,
:spec
)
`, item)
if err != nil {
return err
}
// update the id of our passed in game
mineField.ID, err = result.LastInsertId()
if err != nil {
return err
}
return nil
}
// update an existing mineField
func (c *client) UpdateMineField(mineField *cs.MineField) error {
item := c.converter.ConvertGameMineField(mineField)
if _, err := c.writer.NamedExec(`
UPDATE mineFields SET
updatedAt = CURRENT_TIMESTAMP,
gameId = :gameId,
x = :x,
y = :y,
name = :name,
num = :num,
playerNum = :playerNum,
tags = :tags,
mineFieldType = :mineFieldType,
numMines = :numMines,
detonate = :detonate,
spec = :spec
WHERE id = :id
`, item); err != nil {
return err
}
return nil
}
func (c *client) deleteMineField(mineFieldID int64) error {
if _, err := c.writer.Exec("DELETE FROM mineFields where id = ?", mineFieldID); err != nil {
return fmt.Errorf("delete mineField %d %w", mineFieldID, err)
}
return nil
}