juanatsap
2c7f8de242
- Create internal/constants package with all hardcoded values (environment, cookies, themes, headers, routes, cache) - Create internal/httputil package for HTTP helper functions - Update all handlers and middleware to use centralized constants - Reorganize documentation with numbered prefixes (00-26) - Remove duplicate docs from validation folder and docs/ - Delete handlers/constants.go (moved to internal/constants)
56 lines
1.4 KiB
Go
56 lines
1.4 KiB
Go
// Package httputil provides simple HTTP request/response utilities.
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package httputil
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import (
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"net/http"
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"github.com/juanatsap/cv-site/internal/constants"
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)
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// Lang extracts and validates the language from query params.
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// Returns the language or default if invalid/missing.
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func Lang(r *http.Request) string {
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lang := r.URL.Query().Get("lang")
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if lang == "" || !constants.SupportedLanguages[lang] {
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return constants.LangDefault
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}
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return lang
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}
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// LangOrError extracts and validates language, returns error if invalid.
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// Returns (lang, true) if valid, ("", false) if invalid.
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func LangOrError(r *http.Request) (string, bool) {
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lang := r.URL.Query().Get("lang")
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if lang == "" {
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return constants.LangDefault, true
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}
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if !constants.SupportedLanguages[lang] {
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return "", false
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}
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return lang, true
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}
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// Query extracts a query parameter with optional default.
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func Query(r *http.Request, key, defaultVal string) string {
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val := r.URL.Query().Get(key)
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if val == "" {
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return defaultVal
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}
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return val
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}
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// QueryOneOf extracts a query parameter, validates against allowed values.
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// Returns the value if valid, or defaultVal if empty/invalid.
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func QueryOneOf(r *http.Request, key string, allowed []string, defaultVal string) string {
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val := r.URL.Query().Get(key)
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if val == "" {
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return defaultVal
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}
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for _, a := range allowed {
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if val == a {
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return val
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}
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}
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return defaultVal
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}
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