[golang] Bootstrap contracting and refactor the agent code

golang/pkg/model/contract.go

@@ -0,0 +1,32 @@
+package model
+
+import "time"
+
+type Contract struct {
+	Accepted         bool      `json:"accepted"`
+	DeadlineToAccept time.Time `json:"deadlineToAccept"`
+	Expiration       time.Time `json:"expiration"`
+	FactionSymbol    string    `json:"factionSymbol"`
+	Fullfilled       bool      `json:"fulfilled"`
+	Id               string    `json:"id"`
+	Terms            *Terms    `json:"terms"`
+	Type             string    `json:"type"`
+}
+
+type Deliver struct {
+	DestinationSymbol string `json:"destinationSymbol"`
+	TradeSymbol       string `json:"tradeSymbol"`
+	UnitsFulfilled    int    `json:"unitsFulfilled"`
+	UnitsRequired     int    `json:"unitsRequired"`
+}
+
+type Payment struct {
+	OnAccepted  int `json:"onAccepted"`
+	OnFulfilled int `json:"onFulfilled"`
+}
+
+type Terms struct {
+	Deadline time.Time `json:"deadline"`
+	Payment  *Payment  `json:"payment"`
+	Deliver  []Deliver `json:"deliver"`
+}