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package database
import (
"context"
"database/sql"
"errors"
"fmt"
"github.com/ansg191/ibd-trader-backend/internal/analyzer"
"github.com/ansg191/ibd-trader-backend/internal/utils"
"github.com/Rhymond/go-money"
)
var ErrStockNotFound = errors.New("stock not found")
type StockStore interface {
GetStock(ctx context.Context, symbol string) (Stock, error)
AddStock(ctx context.Context, stock Stock) error
AddRanking(ctx context.Context, symbol string, ibd50, cap20 int) error
AddStockInfo(ctx context.Context, info *StockInfo) (string, error)
GetStockInfo(ctx context.Context, id string) (*StockInfo, error)
AddAnalysis(ctx context.Context, ratingId string, analysis *analyzer.Analysis) error
}
func (d *database) GetStock(ctx context.Context, symbol string) (Stock, error) {
row, err := d.queryRow(ctx, d.db, "stocks/get_stock", symbol)
if err != nil {
return Stock{}, err
}
var stock Stock
if err = row.Scan(&stock.Symbol, &stock.Name, &stock.IBDUrl); err != nil {
if errors.Is(err, sql.ErrNoRows) {
return Stock{}, ErrStockNotFound
}
return Stock{}, err
}
return stock, nil
}
func (d *database) AddStock(ctx context.Context, stock Stock) error {
_, err := d.exec(ctx, d.db, "stocks/add_stock", stock.Symbol, stock.Name, stock.IBDUrl)
return err
}
func (d *database) AddRanking(ctx context.Context, symbol string, ibd50, cap20 int) error {
if ibd50 > 0 {
_, err := d.exec(ctx, d.db, "stocks/add_rank", symbol, "ibd50", ibd50)
if err != nil {
return err
}
}
if cap20 > 0 {
_, err := d.exec(ctx, d.db, "stocks/add_rank", symbol, "cap20", cap20)
if err != nil {
return err
}
}
return nil
}
func (d *database) AddStockInfo(ctx context.Context, info *StockInfo) (string, error) {
tx, err := d.db.BeginTx(ctx, nil)
if err != nil {
return "", err
}
defer func(tx *sql.Tx) {
_ = tx.Rollback()
}(tx)
// Add raw chart analysis
row, err := d.queryRow(ctx, tx, "stocks/add_raw_chart_analysis", info.ChartAnalysis)
if err != nil {
return "", err
}
var chartAnalysisID string
if err = row.Scan(&chartAnalysisID); err != nil {
return "", err
}
// Add stock info
row, err = d.queryRow(ctx, tx,
"stocks/add_rating",
info.Symbol,
info.Ratings.Composite,
info.Ratings.EPS,
info.Ratings.RelStr,
info.Ratings.GroupRelStr,
info.Ratings.SMR,
info.Ratings.AccDis,
chartAnalysisID,
info.Price.Display(),
)
if err != nil {
return "", err
}
var ratingsID string
if err = row.Scan(&ratingsID); err != nil {
return "", err
}
return ratingsID, tx.Commit()
}
func (d *database) GetStockInfo(ctx context.Context, id string) (*StockInfo, error) {
row, err := d.queryRow(ctx, d.db, "stocks/get_stock_info", id)
if err != nil {
return nil, err
}
var info StockInfo
var priceStr string
err = row.Scan(
&info.Symbol,
&info.Name,
&info.ChartAnalysis,
&info.Ratings.Composite,
&info.Ratings.EPS,
&info.Ratings.RelStr,
&info.Ratings.GroupRelStr,
&info.Ratings.SMR,
&info.Ratings.AccDis,
&priceStr,
)
if err != nil {
return nil, err
}
info.Price, err = utils.ParseMoney(priceStr)
if err != nil {
return nil, err
}
return &info, nil
}
func (d *database) AddAnalysis(ctx context.Context, ratingId string, analysis *analyzer.Analysis) error {
_, err := d.exec(ctx, d.db, "stocks/add_analysis",
ratingId,
analysis.Action,
analysis.Price.Display(),
analysis.Reason,
analysis.Confidence,
)
return err
}
type Stock struct {
Symbol string
Name string
IBDUrl string
}
type StockInfo struct {
Symbol string
Name string
ChartAnalysis string
Ratings Ratings
Price *money.Money
}
type Ratings struct {
Composite uint8
EPS uint8
RelStr uint8
GroupRelStr LetterRating
SMR LetterRating
AccDis LetterRating
}
type LetterRating uint8
const (
LetterRatingE LetterRating = iota
LetterRatingEPlus
LetterRatingDMinus
LetterRatingD
LetterRatingDPlus
LetterRatingCMinus
LetterRatingC
LetterRatingCPlus
LetterRatingBMinus
LetterRatingB
LetterRatingBPlus
LetterRatingAMinus
LetterRatingA
LetterRatingAPlus
)
func (r LetterRating) String() string {
switch r {
case LetterRatingE:
return "E"
case LetterRatingEPlus:
return "E+"
case LetterRatingDMinus:
return "D-"
case LetterRatingD:
return "D"
case LetterRatingDPlus:
return "D+"
case LetterRatingCMinus:
return "C-"
case LetterRatingC:
return "C"
case LetterRatingCPlus:
return "C+"
case LetterRatingBMinus:
return "B-"
case LetterRatingB:
return "B"
case LetterRatingBPlus:
return "B+"
case LetterRatingAMinus:
return "A-"
case LetterRatingA:
return "A"
case LetterRatingAPlus:
return "A+"
default:
return "Unknown"
}
}
func LetterRatingFromString(str string) (LetterRating, error) {
switch str {
case "N/A":
fallthrough
case "E":
return LetterRatingE, nil
case "E+":
return LetterRatingEPlus, nil
case "D-":
return LetterRatingDMinus, nil
case "D":
return LetterRatingD, nil
case "D+":
return LetterRatingDPlus, nil
case "C-":
return LetterRatingCMinus, nil
case "C":
return LetterRatingC, nil
case "C+":
return LetterRatingCPlus, nil
case "B-":
return LetterRatingBMinus, nil
case "B":
return LetterRatingB, nil
case "B+":
return LetterRatingBPlus, nil
case "A-":
return LetterRatingAMinus, nil
case "A":
return LetterRatingA, nil
case "A+":
return LetterRatingAPlus, nil
default:
return 0, fmt.Errorf("unknown rating: %s", str)
}
}
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