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package storage
import (
"elefant/models"
"log/slog"
_ "github.com/glebarez/go-sqlite"
"github.com/jmoiron/sqlx"
)
type ChatHistory interface {
ListChats() ([]models.Chat, error)
GetChatByID(id uint32) (*models.Chat, error)
GetLastChat() (*models.Chat, error)
UpsertChat(chat *models.Chat) (*models.Chat, error)
RemoveChat(id uint32) error
}
type ProviderSQL struct {
db *sqlx.DB
logger *slog.Logger
}
func (p ProviderSQL) ListChats() ([]models.Chat, error) {
resp := []models.Chat{}
err := p.db.Select(&resp, "SELECT * FROM chats;")
return resp, err
}
func (p ProviderSQL) GetChatByID(id uint32) (*models.Chat, error) {
resp := models.Chat{}
err := p.db.Get(&resp, "SELECT * FROM chats WHERE id=$1;", id)
return &resp, err
}
func (p ProviderSQL) GetLastChat() (*models.Chat, error) {
resp := models.Chat{}
err := p.db.Get(&resp, "SELECT * FROM chats ORDER BY updated_at DESC LIMIT 1")
return &resp, err
}
func (p ProviderSQL) UpsertChat(chat *models.Chat) (*models.Chat, error) {
// Prepare the SQL statement
query := `
INSERT OR REPLACE INTO chats (id, name, msgs, created_at, updated_at)
VALUES (:id, :name, :msgs, :created_at, :updated_at)
RETURNING *;`
stmt, err := p.db.PrepareNamed(query)
if err != nil {
return nil, err
}
// Execute the query and scan the result into a new chat object
var resp models.Chat
err = stmt.Get(&resp, chat)
return &resp, err
}
func (p ProviderSQL) RemoveChat(id uint32) error {
query := "DELETE FROM chats WHERE ID = $1;"
_, err := p.db.Exec(query, id)
return err
}
func NewProviderSQL(dbPath string, logger *slog.Logger) ChatHistory {
db, err := sqlx.Open("sqlite", dbPath)
if err != nil {
panic(err)
}
// get SQLite version
p := ProviderSQL{db: db, logger: logger}
p.Migrate()
return p
}
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