92 lines
2.2 KiB
Go
92 lines
2.2 KiB
Go
package server
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import (
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"errors"
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"net/http"
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"time"
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"github.com/evcc-io/evcc/core/metrics"
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"github.com/evcc-io/evcc/server/db"
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"github.com/evcc-io/evcc/util"
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)
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// deleteResult reports the number of affected rows
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type deleteResult struct {
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Deleted int64 `json:"deleted"`
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}
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// timeRange parses the mandatory from/to query parameters
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func timeRange(r *http.Request) (time.Time, time.Time, error) {
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q := r.URL.Query()
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from, err := time.Parse(time.RFC3339, q.Get("from"))
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if err != nil {
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return time.Time{}, time.Time{}, errors.New("invalid 'from' parameter")
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}
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to, err := time.Parse(time.RFC3339, q.Get("to"))
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if err != nil {
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return time.Time{}, time.Time{}, errors.New("invalid 'to' parameter")
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}
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return from, to, nil
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}
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// deleteEnergyHandler removes energy metrics. Parameters match
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// /api/history/energy so the same request can be previewed before deleting.
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func deleteEnergyHandler(w http.ResponseWriter, r *http.Request) {
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if db.Instance == nil {
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jsonError(w, http.StatusBadRequest, errors.New("database offline"))
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return
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}
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from, to, err := timeRange(r)
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if err != nil {
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jsonError(w, http.StatusBadRequest, err)
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return
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}
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q := r.URL.Query()
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filter := metrics.EnergyFilter{
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Group: q.Get("group"),
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Name: q.Get("name"),
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Title: q.Get("title"),
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}
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rows, err := metrics.DeleteEnergy(from, to, filter)
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if err != nil {
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jsonError(w, http.StatusInternalServerError, err)
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return
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}
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// invalidate cached values (e.g. the solar scale) derived from the deleted history
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util.ResetCached()
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jsonWrite(w, deleteResult{rows})
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}
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// deleteTariffsHandler removes persisted tariff values
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func deleteTariffsHandler(w http.ResponseWriter, r *http.Request) {
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if db.Instance == nil {
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jsonError(w, http.StatusBadRequest, errors.New("database offline"))
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return
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}
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from, to, err := timeRange(r)
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if err != nil {
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jsonError(w, http.StatusBadRequest, err)
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return
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}
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rows, err := metrics.DeleteTariffs(from, to, r.URL.Query().Get("usage"))
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if err != nil {
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status := http.StatusInternalServerError
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if errors.Is(err, metrics.ErrInvalidUsage) {
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status = http.StatusBadRequest
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}
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jsonError(w, status, err)
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return
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}
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jsonWrite(w, deleteResult{rows})
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}
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