taf/types.go
2023-09-23 18:16:18 -07:00

340 lines
11 KiB
Go

package taf
import (
"time"
"go.elara.ws/taf/airports"
"go.elara.ws/taf/units"
)
// Forecast represents a Terminal Aerodrome Forecast (TAF) weather report for a specific airport.
type Forecast struct {
// ReportType represents the type of report this forecast describes.
ReportType ReportType `json:"report_type,omitempty"`
// Identifier holds the ICAO airport identifier for which this forecast was issued.
Identifier string `json:"identifier,omitempty"`
// Airport provides additional information about the airport for which this forecast was issued.
Airport airports.Airport `json:"airport,omitempty"`
// PublishTime indicates the time at which this forecast was issued.
PublishTime time.Time `json:"publish_time,omitempty"`
// Valid defines the period during which this forecast is applicable.
Valid ValidPair `json:"valid,omitempty"`
// Visibility describes the anticipated visibility conditions.
Visibility Visibility `json:"visibility,omitempty"`
// Wind describes the projected wind conditions.
Wind Wind `json:"wind,omitempty"`
// SkyCondition lists the expected sky conditions.
SkyCondition []SkyCondition `json:"sky_condition,omitempty"`
// Temperature lists the expected temperature values.
Temperature []Temperature `json:"temperature,omitempty"`
// Weather lists information about the expected weather conditions.
Weather []Weather `json:"weather,omitempty"`
// Probabilities contains the probabilities for potential conditions.
Probabilities []*Probability `json:"probabilities,omitempty"`
// Changes lists any expected changes in conditions.
Changes []*Change `json:"changes,omitempty"`
// Flags contains special flags associated with the forecast.
Flags []Flag `json:"flags,omitempty"`
// Remark contains remarks from the forecast.
Remark string `json:"remark,omitempty"`
}
// Change represents a change in weather conditions within a forecast.
type Change struct {
// Type specifies the nature of this weather change.
Type ChangeType `json:"type,omitempty"`
// Valid defines the period during which this change is applicable.
Valid ValidPair `json:"valid,omitempty"`
// Visibility describes the anticipated visibility conditions.
Visibility Visibility `json:"visibility,omitempty"`
// Wind describes the projected wind conditions.
Wind Wind `json:"wind,omitempty"`
// SkyCondition lists the expected sky conditions.
SkyCondition []SkyCondition `json:"sky_condition,omitempty"`
// Temperature lists the expected temperature values.
Temperature []Temperature `json:"temperature,omitempty"`
// Weather lists information about the expected weather conditions.
Weather []Weather `json:"weather,omitempty"`
// Flags contains special flags associated with the change.
Flags []Flag `json:"flags,omitempty"`
// Probability indicates the percent chance of this change occurring.
Probability int `json:"probability,omitempty"`
}
// Probability represents the probability of potential conditions occurring within a forecast.
type Probability struct {
// Valid defines the period during which these potential conditions are applicable.
Valid ValidPair `json:"valid,omitempty"`
// Value indicates the percent chance of these conditions occurring.
Value int `json:"value,omitempty"`
// Visibility describes the anticipated visibility conditions.
Visibility Visibility `json:"visibility,omitempty"`
// Wind describes the projected wind conditions.
Wind Wind `json:"wind,omitempty"`
// SkyCondition lists the expected sky conditions.
SkyCondition []SkyCondition `json:"sky_condition,omitempty"`
// Temperature lists the expected temperature values.
Temperature []Temperature `json:"temperature,omitempty"`
// Weather lists information about the expected weather conditions.
Weather []Weather `json:"weather,omitempty"`
// Flags contains special flags associated with the potential conditions.
Flags []Flag `json:"flags,omitempty"`
}
// ValidPair represents a time interval for which weather data is valid.
type ValidPair struct {
// From represents the time from which the data is valid.
From time.Time `json:"from,omitempty"`
// To indicates the time until which the data is valid.
To time.Time `json:"to,omitempty"`
// Duration contains the total duration for which the data remains valid
Duration time.Duration `json:"duration,omitempty"`
}
// Visibility represents the visibility conditions in the forecast.
type Visibility struct {
// Plus indicates whether visibility is expected to be greater than the specified value.
Plus bool `json:"plus,omitempty"`
// Value holds the visibility measurement. Its unit is determined by the Unit field.
Value float64 `json:"value,omitempty"`
// Unit specifies the unit of measurement for the visibility value.
Unit units.Distance `json:"unit,omitempty"`
}
// ReportType represents different types of reports.
type ReportType string
const (
// Amended represents a report issued when the previous report is no longer accurate.
Amended ReportType = "Amended"
// Corrected represents a correction to a previous report.
Corrected ReportType = "Corrected"
)
// SkyConditionType represents different types of sky conditions in the forecast.
type SkyConditionType string
// Sky Condition Types
const (
Few SkyConditionType = "Few"
Scattered SkyConditionType = "Scattered"
Broken SkyConditionType = "Broken"
Overcast SkyConditionType = "Overcast"
VerticalVisibility SkyConditionType = "VerticalVisibility"
SkyClear SkyConditionType = "SkyClear"
)
// CloudType represents different types of cloud formations.
type CloudType string
// Cloud Types
const (
CumuloNimbus CloudType = "CumuloNimbus"
ToweringCumulus CloudType = "ToweringCumulus"
)
// SkyCondition represents the condition of the sky, including cloud cover and altitude.
type SkyCondition struct {
// Type specifies the nature of the expected sky condition.
Type SkyConditionType `json:"type,omitempty"`
// Altitude represents the altitude at which this sky condition is anticipated, in feet.
Altitude int `json:"altitude,omitempty"`
// CloudType defines the type of clouds expected in the sky.
CloudType CloudType `json:"cloud_type,omitempty"`
}
// Wind represents wind-related information in a weather forecast.
type Wind struct {
// Direction indicates the wind direction of the expected wind.
Direction Direction `json:"direction,omitempty"`
// WindShear specifies the altitude at which wind shear is expected.
WindShear int `json:"wind_shear,omitempty"`
// Speed represents the anticipated wind speed. The unit is determined by the Unit field.
Speed int `json:"speed,omitempty"`
// Gusts holds the projected gust speed. The unit is determined by the Unit field.
Gusts int `json:"gusts,omitempty"`
// Unit denotes the unit of measurement for wind and gust speeds.
Unit units.Speed `json:"unit,omitempty"`
}
// Direction describes the wind direction, which can be variable.
type Direction struct {
// Variable signifies if the wind direction is variable. When true, Value is set to zero.
Variable bool `json:"variable,omitempty"`
// Value specifies the wind direction in degrees.
Value int `json:"value,omitempty"`
}
// Modifier represents modifiers for weather conditions, such as "Heavy" or "Light".
type Modifier string
// Weather Modifiers
const (
// Heavy indicates that weather conditions are expected to be severe.
Heavy Modifier = "Heavy"
// Light indicates that weather conditions are expected to be mild.
Light Modifier = "Light"
)
// Descriptor represents descriptors for weather conditions, such as "Shallow" or "Showers".
type Descriptor string
// Weather Descriptors
const (
Shallow Descriptor = "Shallow"
Patches Descriptor = "Patches"
LowDrifting Descriptor = "LowDrifting"
Blowing Descriptor = "Blowing"
Showers Descriptor = "Showers"
Thunderstorm Descriptor = "Thunderstorm"
Freezing Descriptor = "Freezing"
Partial Descriptor = "Partial"
)
// Precipitation represents different types of precipitation.
type Precipitation string
// Precipitation Types
const (
Drizzle Precipitation = "Drizzle"
Rain Precipitation = "Rain"
Snow Precipitation = "Snow"
SnowGrains Precipitation = "SnowGrains"
IceCrystals Precipitation = "IceCrystals"
IcePellets Precipitation = "IcePellets"
Hail Precipitation = "Hail"
SmallHail Precipitation = "SmallHail"
Unknown Precipitation = "Unknown"
)
// Obscuration represents different types of atmospheric obscurations.
type Obscuration string
// Atmospheric Obscuration Types
const (
Mist Obscuration = "Mist"
Fog Obscuration = "Fog"
Smoke Obscuration = "Smoke"
Dust Obscuration = "Dust"
Sand Obscuration = "Sand"
Haze Obscuration = "Haze"
Spray Obscuration = "Spray"
VolcanicAsh Obscuration = "VolcanicAsh"
)
// Phenomenon represents different atmospheric phenomena like whirls, squalls, etc.
type Phenomenon string
// Weather Phenomena
const (
Whirls Phenomenon = "Whirls"
Squalls Phenomenon = "Squalls"
FunnelCloud Phenomenon = "FunnelCloud"
Sandstorm Phenomenon = "Sandstorm"
Duststorm Phenomenon = "Duststorm"
)
// Weather represents various weather-related conditions in the forecast.
type Weather struct {
// Vicinity specifies if the described weather is occurring near the airport.
Vicinity bool `json:"vicinity,omitempty"`
// Modifier indicates the severity of the weather conditions.
Modifier Modifier `json:"modifier,omitempty"`
// Descriptor provides details about the specific type of expected weather.
Descriptor Descriptor `json:"descriptor,omitempty"`
// Precipitation indicates the anticipated type of precipitation.
Precipitation Precipitation `json:"precipitation,omitempty"`
// Obscuration describes any potential atmospheric obscurations expected.
Obscuration Obscuration `json:"obscuration,omitempty"`
// Phenomenon contains anticipated weather phenomena.
Phenomenon Phenomenon `json:"phenomenon,omitempty"`
}
// TemperatureType represents different types of temperature data, like "High" or "Low".
type TemperatureType string
// Temperature Types
const (
High TemperatureType = "High"
Low TemperatureType = "Low"
)
// Temperature represents temperature-related details in the forecast.
type Temperature struct {
// Type specifies if this temperature is a high or low value.
Type TemperatureType `json:"type,omitempty"`
// Value holds the anticipated temperature in degrees Celsius.
Value int `json:"value,omitempty"`
// Time indicates the expected time for this temperature.
Time time.Time `json:"time,omitempty"`
}
// ChangeType represents different types of changes in weather conditions.
type ChangeType string
// Change Types
const (
// From indicates a rapid change.
From ChangeType = "From"
// Becoming indicates a slow or gradual change.
Becoming ChangeType = "Becoming"
// Temporary indicates that a change is expected to last generally less than an hour.
Temporary ChangeType = "Temporary"
)
// Flag represents special flags for specific weather conditions.
type Flag string
// Flags
const (
// CeilingAndVisibilityOK indicates that visibility is over 10km, that
// there are no significant clouds, and no significant weather
CeilingAndVisibilityOK Flag = "CeilingAndVisibilityOK"
)