package handlers

import (
	"net/http"

	"github.com/jmoiron/sqlx"
	"workorders/internal/model"
)

type ActivityHandler struct{ db *sqlx.DB }

func NewActivityHandler(db *sqlx.DB) *ActivityHandler { return &ActivityHandler{db: db} }

func (h *ActivityHandler) List(w http.ResponseWriter, r *http.Request) {
	woID, err := intParam(r, "id")
	if err != nil {
		respondError(w, http.StatusBadRequest, "invalid id")
		return
	}
	var rows []model.AuditEntry
	err = h.db.Select(&rows, `
		SELECT
			a.id,
			a.action,
			ISNULL(a.old_value,'') AS old_value,
			ISNULL(a.new_value,'') AS new_value,
			ISNULL(u.display_name, ISNULL(u.username, CAST(a.performed_by AS NVARCHAR(100)))) AS performed_by,
			a.performed_at
		FROM wo_audit_log a
		LEFT JOIN users u ON u.id = a.performed_by
		WHERE a.wo_id = @p1
		ORDER BY a.performed_at DESC`,
		woID)
	if err != nil {
		respondError(w, http.StatusInternalServerError, err.Error())
		return
	}
	if rows == nil {
		rows = []model.AuditEntry{}
	}
	respond(w, http.StatusOK, rows)
}