add csv parsing

service_a/internal/domains/meteo/domain.go

@@ -0,0 +1,52 @@
+package meteo
+
+import (
+	"errors"
+	"time"
+)
+
+type H map[string]any
+
+type MeteoData struct {
+	Timestamp  time.Time `csv:"fecha"`
+	Location   string    `csv:"ciudad"`
+	MaxTemp    float32   `csv:"temperatura maxima"`
+	MinTemp    float32   `csv:"temperatura minima"`
+	Rainfall   float32   `csv:"precipitacion"`
+	Cloudiness float32   `csv:"nubosidad"`
+}
+
+type RejectedMeteoData struct {
+	RowValue string
+	Reason   string
+}
+
+type FileStats struct {
+	RowsInserted int    `json:"rows_inserted"`
+	RowsRejected int    `json:"rows_rejected"`
+	ElapsedMS    int    `json:"elapsed_ms"`
+	FileChecksum string `json:"file_checksum"`
+}
+
+var (
+	ErrCannotParseFile        = errors.New("cannot parse file")
+	ErrValidateRecord         = errors.New("error validating record")
+	ErrRecordNotValid         = errors.New("record not valid")
+	ErrInvalidDateFormat      = errors.New("invalid date format")
+	ErrReadingCSVHeader       = errors.New("error reading CSV header")
+	ErrReadingCSVRow          = errors.New("error reading CSV row")
+	ErrMissingDateField       = errors.New("missing date field")
+	ErrMissingCityField       = errors.New("missing city field")
+	ErrMissingMaxTempField    = errors.New("missing max temp field")
+	ErrMissingMinTempField    = errors.New("missing min temp field")
+	ErrMissingRainfallField   = errors.New("missing rainfall field")
+	ErrMissingCloudinessField = errors.New("missing cloudiness field")
+	ErrInvalidMaxTemp         = errors.New("invalid max temp")
+	ErrInvalidMinTemp         = errors.New("invalid min temp")
+	ErrInvalidRainfall        = errors.New("invalid rainfall")
+	ErrInvalidCloudiness      = errors.New("invalid cloudiness")
+	ErrMaxTempOutOfRange      = errors.New("max temp out of range (must be <= 60°C)")
+	ErrMinTempOutOfRange      = errors.New("min temp out of range (must be >= -20°C)")
+	ErrRainfallOutOfRange     = errors.New("rainfall out of range (must be 0-500 mm)")
+	ErrCloudinessOutOfRange   = errors.New("cloudiness out of range (must be 0-100%)")
+)