API server online and DB connection established

Introduces the api-server/main.go, which creates the echo server,
connects it to the implemented handlers and runs it.

Fix the SQL query to retrieved transactions w/ categories.

Issues #6 and #7

cmd/api-server/main.go

@@ -0,0 +1,42 @@
+package main
+
+import (
+	"database/sql"
+	"fmt"
+	"log"
+	"os"
+
+	"git.rosemyrtle.work/personal-finance/server/internal/api"
+
+	_ "github.com/jackc/pgx/v5/stdlib"
+	"github.com/joho/godotenv"
+	"github.com/labstack/echo/v4"
+)
+
+func main() {
+	if err := godotenv.Load(); err != nil {
+		log.Fatal("error loading .env file")
+		return
+	}
+
+	database := fmt.Sprintf("postgres://%s:%s@%s/%s",
+		os.Getenv("PG_USER"),
+		os.Getenv("PG_PASSWORD"),
+		os.Getenv("PG_URL"),
+		os.Getenv("PG_DB"))
+
+	db, err := sql.Open("pgx", database)
+	if err != nil {
+		log.Fatalf("unable to connect to database: %v\n", err)
+	}
+
+	if err := db.Ping(); err != nil {
+		log.Fatal(err)
+	}
+
+	e := echo.New()
+	handlers := api.ServerImpl{Db: db}
+	api.RegisterHandlers(e, &handlers)
+
+	e.Logger.Fatal(e.Start(":9000"))
+}

go.mod

@@ -4,6 +4,10 @@ go 1.21.1
 
 require (
 	github.com/DATA-DOG/go-sqlmock v1.5.2
+	github.com/jackc/pgx/v5 v5.5.4
+)
+
+require (
 	github.com/apapsch/go-jsonmerge/v2 v2.0.0 // indirect
 	github.com/deepmap/oapi-codegen/v2 v2.1.0 // indirect
 	github.com/getkin/kin-openapi v0.123.0 // indirect
@@ -11,6 +15,10 @@ require (
 	github.com/go-openapi/swag v0.22.8 // indirect
 	github.com/google/uuid v1.5.0 // indirect
 	github.com/invopop/yaml v0.2.0 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a // indirect
+	github.com/jackc/puddle/v2 v2.2.1 // indirect
+	github.com/joho/godotenv v1.5.1
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/labstack/echo/v4 v4.11.4 // indirect
 	github.com/labstack/gommon v0.4.2 // indirect
@@ -25,6 +33,7 @@ require (
 	golang.org/x/crypto v0.17.0 // indirect
 	golang.org/x/mod v0.12.0 // indirect
 	golang.org/x/net v0.19.0 // indirect
+	golang.org/x/sync v0.3.0 // indirect
 	golang.org/x/sys v0.15.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
 	golang.org/x/tools v0.12.0 // indirect

go.sum

@@ -17,6 +17,16 @@ github.com/google/uuid v1.5.0 h1:1p67kYwdtXjb0gL0BPiP1Av9wiZPo5A8z2cWkTZ+eyU=
 github.com/google/uuid v1.5.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/invopop/yaml v0.2.0 h1:7zky/qH+O0DwAyoobXUqvVBwgBFRxKoQ/3FjcVpjTMY=
 github.com/invopop/yaml v0.2.0/go.mod h1:2XuRLgs/ouIrW3XNzuNj7J3Nvu/Dig5MXvbCEdiBN3Q=
+github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
+github.com/jackc/pgpassfile v1.0.0/go.mod h1:CEx0iS5ambNFdcRtxPj5JhEz+xB6uRky5eyVu/W2HEg=
+github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a h1:bbPeKD0xmW/Y25WS6cokEszi5g+S0QxI/d45PkRi7Nk=
+github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a/go.mod h1:5TJZWKEWniPve33vlWYSoGYefn3gLQRzjfDlhSJ9ZKM=
+github.com/jackc/pgx/v5 v5.5.4 h1:Xp2aQS8uXButQdnCMWNmvx6UysWQQC+u1EoizjguY+8=
+github.com/jackc/pgx/v5 v5.5.4/go.mod h1:ez9gk+OAat140fv9ErkZDYFWmXLfV+++K0uAOiwgm1A=
+github.com/jackc/puddle/v2 v2.2.1 h1:RhxXJtFG022u4ibrCSMSiu5aOq1i77R3OHKNJj77OAk=
+github.com/jackc/puddle/v2 v2.2.1/go.mod h1:vriiEXHvEE654aYKXXjOvZM39qJ0q+azkZFrfEOc3H4=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
 github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
 github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
 github.com/juju/gnuflag v0.0.0-20171113085948-2ce1bb71843d/go.mod h1:2PavIy+JPciBPrBUjwbNvtwB6RQlve+hkpll6QSNmOE=
@@ -42,6 +52,7 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
 github.com/spkg/bom v0.0.0-20160624110644-59b7046e48ad/go.mod h1:qLr4V1qq6nMqFKkMo8ZTx3f+BZEkzsRUY10Xsm2mwU0=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
 github.com/valyala/fasttemplate v1.2.2 h1:lxLXG0uE3Qnshl9QyaK6XJxMXlQZELvChBOCmQD0Loo=
@@ -52,6 +63,8 @@ golang.org/x/mod v0.12.0 h1:rmsUpXtvNzj340zd98LZ4KntptpfRHwpFOHG188oHXc=
 golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/net v0.19.0 h1:zTwKpTd2XuCqf8huc7Fo2iSy+4RHPd10s4KzeTnVr1c=
 golang.org/x/net v0.19.0/go.mod h1:CfAk/cbD4CthTvqiEl8NpboMuiuOYsAr/7NOjZJtv1U=
+golang.org/x/sync v0.3.0 h1:ftCYgMx6zT/asHUrPw8BLLscYtGznsLAnjq5RH9P66E=
+golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.15.0 h1:h48lPFYpsTvQJZF4EKyI4aLHaev3CxivZmv7yZig9pc=
@@ -63,6 +76,7 @@ golang.org/x/tools v0.12.0/go.mod h1:Sc0INKfu04TlqNoRA1hgpFZbhYXHPr4V5DzpSBTPqQM
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/api/converter.go

@@ -11,18 +11,14 @@ func convert[T any](rows *sql.Rows) []T {
 	for rows.Next() {
 		var r T
 		s := reflect.ValueOf(&r).Elem()
-		log.Println(s)
 
 		numCols := s.NumField()
 		columns := make([]interface{}, numCols)
-		log.Println(columns)
 
 		for i := 0; i < numCols; i++ {
 			field := s.Field(i)
-			log.Println(field)
 			columns[i] = field.Addr().Interface()
 		}
-		log.Println(columns)
 
 		if err := rows.Scan(columns...); err != nil {
 			log.Fatal(err)

internal/api/impl.go

@@ -11,7 +11,7 @@ import (
 )
 
 type ServerImpl struct {
-	db *sql.DB
+	Db *sql.DB
 }
 
 func (*ServerImpl) GetBanks(ctx echo.Context) error {
@@ -23,7 +23,7 @@ func (*ServerImpl) GetBanksById(ctx echo.Context, bankId int64) error {
 }
 
 func (pf *ServerImpl) GetTransactions(ctx echo.Context, params GetTransactionsParams) error {
-	rows, err := pf.db.Query("SELECT t.category, t.date, t.description, t.id, tc.amount FROM pfbudget.transactions t LEFT JOIN pfbudget.transactions_categorized tc ON t.id = tc.id")
+	rows, err := pf.Db.Query("SELECT tc.name, t.date, t.description, t.id, t.amount FROM pfbudget.transactions t LEFT JOIN pfbudget.transactions_categorized tc ON t.id = tc.id")
 	if err != nil {
 		log.Fatal(err)
 	}