commit inicial do projeto

internal/api/dao_handlers.go

@@ -0,0 +1,84 @@
+package api
+
+import (
+	"encoding/json"
+	"net/http"
+	"strconv"
+
+	"github.com/gorilla/mux"
+	"dejo_node/internal/dao"
+)
+
+type CreateProposalRequest struct {
+	Title    string `json:"title"`
+	Content  string `json:"content"`
+	Type     string `json:"type"`
+	Creator  string `json:"creator"`
+	Duration int64  `json:"duration"`
+}
+
+type VoteRequest struct {
+	Address string `json:"address"`
+	Approve bool   `json:"approve"`
+}
+
+func (h *Handler) CreateProposal(w http.ResponseWriter, r *http.Request) {
+	var req CreateProposalRequest
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		WriteError(w, http.StatusBadRequest, "JSON inválido")
+		return
+	}
+	p := DaoStore.Create(req.Title, req.Content, req.Creator, dao.ProposalType(req.Type), req.Duration)
+	_ = DaoStore.SaveToDisk("data/proposals.db")
+	WriteJSON(w, p)
+}
+
+func (h *Handler) VoteProposal(w http.ResponseWriter, r *http.Request) {
+	idStr := mux.Vars(r)["id"]
+	id, err := strconv.ParseUint(idStr, 10, 64)
+	if err != nil {
+		WriteError(w, http.StatusBadRequest, "ID inválido")
+		return
+	}
+	var req VoteRequest
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		WriteError(w, http.StatusBadRequest, "JSON inválido")
+		return
+	}
+	p, err := DaoStore.Get(id)
+	if err != nil {
+		WriteError(w, http.StatusNotFound, "Proposta não encontrada")
+		return
+	}
+	_ = p.Vote(req.Address, req.Approve)
+	p.CheckAndClose(h.snapshotStakes())
+	_ = DaoStore.SaveToDisk("data/proposals.db")
+	WriteJSON(w, p)
+}
+
+func (h *Handler) GetProposal(w http.ResponseWriter, r *http.Request) {
+	idStr := mux.Vars(r)["id"]
+	id, err := strconv.ParseUint(idStr, 10, 64)
+	if err != nil {
+		WriteError(w, http.StatusBadRequest, "ID inválido")
+		return
+	}
+	p, err := DaoStore.Get(id)
+	if err != nil {
+		WriteError(w, http.StatusNotFound, "Proposta não encontrada")
+		return
+	}
+	WriteJSON(w, p)
+}
+
+func (h *Handler) ListProposals(w http.ResponseWriter, r *http.Request) {
+	WriteJSON(w, DaoStore.List())
+}
+
+func (h *Handler) snapshotStakes() map[string]uint64 {
+	snapshot := make(map[string]uint64)
+	for addr, entry := range h.StakingStore.Snapshot() {
+		snapshot[addr] = entry.Amount
+	}
+	return snapshot
+}