Go + Templ + HTMX app that checks the weather (Open-Meteo, MET Norway fallback), scores run/ride/walk with plain rules, and has a local open-weight model (Gemma 4 E2B via any OpenAI-compatible server) write the plan. Routes are loops from your door (BRouter) plus signposted OpenStreetMap routes (Overpass), with GPX export.
89 lines
3.0 KiB
Go
89 lines
3.0 KiB
Go
// Package config loads workout-suggester settings from the environment and
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// an optional .env file.
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package config
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import (
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"bufio"
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"fmt"
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"os"
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"strings"
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"time"
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)
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// Config holds all runtime settings.
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type Config struct {
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Addr string // ADDR: where the web UI listens
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BaseURL string // LLM_BASE_URL: OpenAI-compatible API root, e.g. http://127.0.0.1:8000/v1
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APIKey string // LLM_API_KEY: optional bearer token for the model server
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Model string // LLM_MODEL: model id; empty means "first model the server lists"
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Timeout time.Duration // LLM_TIMEOUT: upper bound for a single reply
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OverpassURL string // OVERPASS_URL: OpenStreetMap Overpass API endpoint
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BRouterURL string // BROUTER_URL: BRouter endpoint for loops from your door; "-" disables
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DefaultPlace string // DEFAULT_PLACE: prefilled town in the form
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ForecastURL string // OPEN_METEO_URL: forecast endpoint (Open-Meteo is self-hostable)
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GeocodeURL string // OPEN_METEO_GEOCODE_URL: place search endpoint
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}
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// Load reads the configuration from environment variables, applying defaults.
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func Load() (Config, error) {
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c := Config{
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Addr: env("ADDR", "127.0.0.1:3000"),
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BaseURL: strings.TrimRight(env("LLM_BASE_URL", "http://127.0.0.1:8000/v1"), "/"),
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APIKey: os.Getenv("LLM_API_KEY"),
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Model: os.Getenv("LLM_MODEL"),
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Timeout: 3 * time.Minute,
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OverpassURL: env("OVERPASS_URL", "https://overpass-api.de/api/interpreter"),
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BRouterURL: env("BROUTER_URL", "https://brouter.de/brouter"),
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DefaultPlace: os.Getenv("DEFAULT_PLACE"),
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ForecastURL: env("OPEN_METEO_URL", "https://api.open-meteo.com/v1/forecast"),
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GeocodeURL: env("OPEN_METEO_GEOCODE_URL", "https://geocoding-api.open-meteo.com/v1/search"),
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}
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if v := os.Getenv("LLM_TIMEOUT"); v != "" {
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d, err := time.ParseDuration(v)
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if err != nil {
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return c, fmt.Errorf("LLM_TIMEOUT: %w", err)
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}
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c.Timeout = d
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}
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return c, nil
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}
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func env(key, fallback string) string {
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if v, ok := os.LookupEnv(key); ok && v != "" {
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return v
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}
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return fallback
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}
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// LoadEnvFile sets variables from a KEY=VALUE file. Variables that are
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// already set in the environment win, so the real environment can override
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// the file. Blank lines and lines starting with # are ignored; values may be
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// wrapped in single or double quotes.
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func LoadEnvFile(path string) error {
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f, err := os.Open(path)
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if err != nil {
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return err
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}
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defer f.Close()
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sc := bufio.NewScanner(f)
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for n := 1; sc.Scan(); n++ {
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line := strings.TrimSpace(sc.Text())
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if line == "" || strings.HasPrefix(line, "#") {
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continue
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}
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key, val, ok := strings.Cut(strings.TrimPrefix(line, "export "), "=")
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if !ok {
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return fmt.Errorf("%s:%d: expected KEY=VALUE", path, n)
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}
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key, val = strings.TrimSpace(key), strings.TrimSpace(val)
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if len(val) >= 2 && (val[0] == '"' || val[0] == '\'') && val[len(val)-1] == val[0] {
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val = val[1 : len(val)-1]
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}
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if _, set := os.LookupEnv(key); !set {
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os.Setenv(key, val)
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}
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}
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return sc.Err()
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}
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