Ally/War commands

pkg/game/command.go

@@ -0,0 +1,32 @@
+package game
+
+import "github.com/iliadenisov/galaxy/pkg/model/game"
+
+func DeclareWar(configure func(*Param), from, to string) (err error) {
+	control(configure, func(c *ctrl) { c.execute(func(r Repo) { err = updateRelation(r, from, to, game.RelationWar) }) })
+	return
+}
+
+func DeclarePeace(configure func(*Param), from, to string) (err error) {
+	control(configure, func(c *ctrl) { c.execute(func(r Repo) { err = updateRelation(r, from, to, game.RelationPeace) }) })
+	return
+}
+
+func updateRelation(r Repo, hostRace, opponentRace string, rel game.Relation) error {
+	g, err := r.LoadState()
+	if err != nil {
+		return err
+	}
+	hostID, err := g.HostRaceID(hostRace)
+	if err != nil {
+		return err
+	}
+	opponentID, err := g.OpponentRaceID(opponentRace)
+	if err != nil {
+		return err
+	}
+	if err := g.UpdateRelation(hostID, opponentID, rel); err != nil {
+		return err
+	}
+	return r.SaveState(g)
+}