Files
go-caatsm/internal/domain/weather/elements.go
T
windyboyandClaude Sonnet 4.5 d0fd461e38 Add weather report parsing for METAR, SPECI, and TAF
Implement comprehensive weather parsing capabilities following Clean
Architecture principles with composite parser pattern for routing between
aviation and weather messages.

## Features Added

- Weather report parsing (METAR, SPECI, TAF)
- Composite parser pattern for message routing
- Lenient parsing with warnings for unrecognized tokens
- Support for PROB and RMK sections in TAF
- Rich domain modeling with typed weather elements

## Architecture

**Domain Layer** (internal/domain/weather/):
- WeatherMessage interface with Metar and Taf implementations
- Weather elements: Wind, Visibility, Cloud, Temperature, Altimeter, Phenomenon
- Domain errors: ErrInvalidFormat, ErrMissingStation, ErrMissingTime

**Port Layer** (internal/port/weather_parser.go):
- WeatherParser interface with CanParse and Parse methods

**Adapter Layer** (internal/adapter/parser/weather/):
- WeatherParserImpl with classification and parsing logic
- Comprehensive regex patterns for weather elements
- METAR/SPECI parser with element extraction
- TAF parser with period handling (FM, TEMPO, BECMG, PROB)
- Helper functions for time parsing and unit conversions

**Composite Parser** (internal/adapter/parser/composite.go):
- Routes weather reports to weather parser
- Falls back to aviation parser for telegrams
- Converts WeatherMessage to ParsedTelegram format

## Integration

- Updated ProvideParser to create composite parser with weather parser
- Added weather parser to Wire DI configuration
- Updated processor_bench_test.go for weather parser integration
- Documentation added in docs/weather-parser.md

## Testing

- 29 comprehensive tests for weather parsing (all passing)
- Tests for classification, METAR, SPECI, TAF, and composite routing
- Benchmark compatibility maintained

## Fixes Applied

- TAF PROB parsing: Include PROB/RMK in special section detection
- Composite test: Updated to use properly formatted AFTN telegram
- Linter issues: Switch statement refactor, removed unused patterns
- Ineffective break statement fixed in TAF parser

## Coverage

~1,743 lines of new code with:
- Complete METAR/SPECI parsing
- TAF parsing with period support
- Lenient error handling with warnings
- Unit conversions and time utilities

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2025-12-24 16:38:03 +08:00

61 lines
2.3 KiB
Go

package weather
import "time"
// Wind represents wind information
type Wind struct {
Direction int `json:"direction"` // Degrees
Speed int `json:"speed"` // KT or MPS
Gust int `json:"gust,omitempty"` // Gust speed
Variable bool `json:"variable,omitempty"` // VRB
VariableFrom int `json:"variable_from,omitempty"` // Variable wind from direction
VariableTo int `json:"variable_to,omitempty"` // Variable wind to direction
Unit string `json:"unit"` // "KT", "MPS"
}
// Visibility represents visibility information
type Visibility struct {
Distance float64 `json:"distance"` // Meters or statute miles
Unit string `json:"unit"` // "M", "SM"
Direction string `json:"direction,omitempty"` // Directional visibility
Modifier string `json:"modifier,omitempty"` // +, -, M, P
}
// Cloud represents cloud information
type Cloud struct {
Type string `json:"type"` // FEW, SCT, BKN, OVC, VV
Altitude int `json:"altitude"` // Feet
Modifier string `json:"modifier,omitempty"` // CB, TCU
}
// Temperature represents temperature or dewpoint
type Temperature struct {
Value float64 `json:"value"`
Unit string `json:"unit"` // "C"
}
// Altimeter represents altimeter setting
type Altimeter struct {
Value float64 `json:"value"`
Unit string `json:"unit"` // "QNH" (hPa), "A" (inHg)
}
// Phenomenon represents weather phenomenon
type Phenomenon struct {
Intensity string `json:"intensity,omitempty"` // -, +
Descriptor string `json:"descriptor,omitempty"` // MI, BC, PR, TS, etc.
Weather string `json:"weather"` // RA, SN, FG, etc.
}
// TafPeriod represents a TAF period (FM, TEMPO, BECMG, or main forecast)
type TafPeriod struct {
Type string `json:"type"` // "FM", "TEMPO", "BECMG", "MAIN"
ValidFrom time.Time `json:"valid_from,omitempty"`
ValidTo time.Time `json:"valid_to,omitempty"`
Wind *Wind `json:"wind,omitempty"`
Visibility *Visibility `json:"visibility,omitempty"`
Clouds []Cloud `json:"clouds,omitempty"`
Phenomena []Phenomenon `json:"phenomena,omitempty"`
Probability int `json:"probability,omitempty"` // PROB30, PROB40
}