Add configuration and CLI foundation

internal/config/config.go

@@ -0,0 +1,71 @@
+// Package config owns application configuration structures, defaults, loading,
+// precedence, and validation.
+package config
+
+import "time"
+
+type MissingSourcePolicy string
+
+const (
+	MissingSourceError MissingSourcePolicy = "error"
+	MissingSourceWarn  MissingSourcePolicy = "warn"
+	MissingSourceNone  MissingSourcePolicy = "none"
+)
+
+type Config struct {
+	WeatherAPI    WeatherAPIConfig    `yaml:"weather_api"`
+	MissingSource MissingSourceConfig `yaml:"missing_source"`
+	Scriptorium   ScriptoriumConfig   `yaml:"scriptorium"`
+	Workspace     WorkspaceConfig     `yaml:"workspace"`
+	Reports       ReportOutputConfig  `yaml:"reports"`
+	Dayparts      []DaypartConfig     `yaml:"dayparts"`
+	RecentChange  RecentChangeConfig  `yaml:"recent_change"`
+}
+
+type WeatherAPIConfig struct {
+	BaseURL   string        `yaml:"base_url"`
+	Timeout   time.Duration `yaml:"timeout"`
+	Precision int           `yaml:"precision"`
+	Units     string        `yaml:"units"`
+	Timezone  string        `yaml:"timezone"`
+	Format    string        `yaml:"format"`
+}
+
+type MissingSourceConfig struct {
+	Default MissingSourcePolicy            `yaml:"default"`
+	Sources map[string]MissingSourcePolicy `yaml:"sources"`
+}
+
+type ScriptoriumConfig struct {
+	Binary     string        `yaml:"binary"`
+	ConfigPath string        `yaml:"config_path"`
+	Profile    string        `yaml:"profile"`
+	Timeout    time.Duration `yaml:"timeout"`
+	ExtraArgs  []string      `yaml:"extra_args"`
+}
+
+type WorkspaceConfig struct {
+	Root            string `yaml:"root"`
+	SnapshotsDir    string `yaml:"snapshots_dir"`
+	ReportsDir      string `yaml:"reports_dir"`
+	DataPackagesDir string `yaml:"data_packages_dir"`
+	PreflightDir    string `yaml:"preflight_dir"`
+}
+
+type ReportOutputConfig struct {
+	OutputDir string            `yaml:"output_dir"`
+	Paths     map[string]string `yaml:"paths"`
+}
+
+type DaypartConfig struct {
+	Name  string `yaml:"name"`
+	Start string `yaml:"start"`
+	End   string `yaml:"end"`
+}
+
+type RecentChangeConfig struct {
+	TemperatureDegrees       float64 `yaml:"temperature_degrees"`
+	PrecipProbabilityPoints  int     `yaml:"precip_probability_points"`
+	WindGustMilesPerHour     int     `yaml:"wind_gust_miles_per_hour"`
+	PrecipTimingShiftMinutes int     `yaml:"precip_timing_shift_minutes"`
+}