50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
package handlers
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import (
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"context"
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"net/http"
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"git.haelnorr.com/h/golib/hws"
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"git.haelnorr.com/h/oslstats/internal/db"
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"git.haelnorr.com/h/oslstats/internal/validation"
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"github.com/pkg/errors"
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"github.com/uptrace/bun"
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)
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// IsUnique creates a handler that checks field uniqueness
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// Returns 200 OK if unique, 409 Conflict if not unique
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func IsUnique(
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s *hws.Server,
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conn *bun.DB,
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model any,
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field string,
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) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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getter, err := validation.ParseForm(r)
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if err != nil {
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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value := getter.String(field).TrimSpace().Required().Value
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if !getter.Validate() {
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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unique := false
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if ok := db.WithNotifyTx(s, w, r, conn, func(ctx context.Context, tx bun.Tx) (bool, error) {
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unique, err = db.IsUnique(ctx, tx, model, field, value)
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if err != nil {
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return false, errors.Wrap(err, "db.IsUnique")
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}
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return true, nil
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}); !ok {
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return
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}
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if unique {
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w.WriteHeader(http.StatusOK)
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} else {
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w.WriteHeader(http.StatusConflict)
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}
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})
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}
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