package recruiting

import (
	"net/http"

	"github.com/go-chi/chi/v5"
	"github.com/google/uuid"
	"github.com/shopspring/decimal"
)

func (h *Handler) listGoals(w http.ResponseWriter, r *http.Request) {
	q := r.URL.Query()
	out, err := h.svc.ListGoals(r.Context(), q.Get("team_id"), q.Get("owner"))
	if err != nil {
		h.fail(w, err)
		return
	}
	writeJSON(w, http.StatusOK, map[string]any{"goals": out, "count": len(out)})
}

func (h *Handler) setGoal(w http.ResponseWriter, r *http.Request) {
	var in struct {
		Scope       string          `json:"scope"`
		SubjectID   string          `json:"subject_id"`
		Metric      string          `json:"metric"`
		PeriodStart string          `json:"period_start"`
		PeriodDays  int             `json:"period_days"`
		Target      decimal.Decimal `json:"target"`
		Note        string          `json:"note"`
	}
	if err := decode(w, r, &in); err != nil {
		writeErr(w, http.StatusBadRequest, "invalid body", "")
		return
	}
	if in.PeriodDays == 0 {
		// The manager view's own default window, so a goal set without thinking about length lines up with
		// the figure it will be judged against rather than silently spanning a different period.
		in.PeriodDays = 30
	}
	out, err := h.svc.SetGoal(r.Context(), in.Scope, in.SubjectID, in.Metric, in.PeriodStart,
		in.PeriodDays, in.Target, in.Note)
	if err != nil {
		h.fail(w, err)
		return
	}
	writeJSON(w, http.StatusOK, out)
}

func (h *Handler) deleteGoal(w http.ResponseWriter, r *http.Request) {
	id, err := uuid.Parse(chi.URLParam(r, "goalID"))
	if err != nil {
		writeErr(w, http.StatusBadRequest, "invalid goal id", "")
		return
	}
	if err := h.svc.DeleteGoal(r.Context(), id); err != nil {
		h.fail(w, err)
		return
	}
	w.WriteHeader(http.StatusNoContent)
}

// forecast returns the weighted pipeline for a scope.
func (h *Handler) forecast(w http.ResponseWriter, r *http.Request) {
	q := r.URL.Query()
	out, err := h.svc.Pipeline(r.Context(), q.Get("team_id"), q.Get("owner"))
	if err != nil {
		h.fail(w, err)
		return
	}
	writeJSON(w, http.StatusOK, out)
}