package headscale

import (
	"gopkg.in/check.v1"
	"tailscale.com/tailcfg"
)

func (s *Suite) TestBasicSharedNodesInNamespace(c *check.C) {
	n1, err := h.CreateNamespace("shared1")
	c.Assert(err, check.IsNil)

	n2, err := h.CreateNamespace("shared2")
	c.Assert(err, check.IsNil)

	pak1, err := h.CreatePreAuthKey(n1.Name, false, false, nil)
	c.Assert(err, check.IsNil)

	pak2, err := h.CreatePreAuthKey(n2.Name, false, false, nil)
	c.Assert(err, check.IsNil)

	_, err = h.GetMachine(n1.Name, "test_get_shared_nodes_1")
	c.Assert(err, check.NotNil)

	m1 := Machine{
		ID:             0,
		MachineKey:     "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
		NodeKey:        "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
		DiscoKey:       "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
		Name:           "test_get_shared_nodes_1",
		NamespaceID:    n1.ID,
		Registered:     true,
		RegisterMethod: "authKey",
		IPAddress:      "100.64.0.1",
		AuthKeyID:      uint(pak1.ID),
	}
	h.db.Save(&m1)

	_, err = h.GetMachine(n1.Name, m1.Name)
	c.Assert(err, check.IsNil)

	m2 := Machine{
		ID:             1,
		MachineKey:     "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		NodeKey:        "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		DiscoKey:       "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		Name:           "test_get_shared_nodes_2",
		NamespaceID:    n2.ID,
		Registered:     true,
		RegisterMethod: "authKey",
		IPAddress:      "100.64.0.2",
		AuthKeyID:      uint(pak2.ID),
	}
	h.db.Save(&m2)

	_, err = h.GetMachine(n2.Name, m2.Name)
	c.Assert(err, check.IsNil)

	p1s, err := h.getPeers(m1)
	c.Assert(err, check.IsNil)
	c.Assert(len(*p1s), check.Equals, 0)

	err = h.AddSharedMachineToNamespace(&m2, n1)
	c.Assert(err, check.IsNil)

	p1sAfter, err := h.getPeers(m1)
	c.Assert(err, check.IsNil)
	c.Assert(len(*p1sAfter), check.Equals, 1)
	c.Assert((*p1sAfter)[0].ID, check.Equals, tailcfg.NodeID(m2.ID))
}

func (s *Suite) TestSameNamespace(c *check.C) {
	n1, err := h.CreateNamespace("shared1")
	c.Assert(err, check.IsNil)

	n2, err := h.CreateNamespace("shared2")
	c.Assert(err, check.IsNil)

	pak1, err := h.CreatePreAuthKey(n1.Name, false, false, nil)
	c.Assert(err, check.IsNil)

	pak2, err := h.CreatePreAuthKey(n2.Name, false, false, nil)
	c.Assert(err, check.IsNil)

	_, err = h.GetMachine(n1.Name, "test_get_shared_nodes_1")
	c.Assert(err, check.NotNil)

	m1 := Machine{
		ID:             0,
		MachineKey:     "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
		NodeKey:        "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
		DiscoKey:       "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
		Name:           "test_get_shared_nodes_1",
		NamespaceID:    n1.ID,
		Registered:     true,
		RegisterMethod: "authKey",
		IPAddress:      "100.64.0.1",
		AuthKeyID:      uint(pak1.ID),
	}
	h.db.Save(&m1)

	_, err = h.GetMachine(n1.Name, m1.Name)
	c.Assert(err, check.IsNil)

	m2 := Machine{
		ID:             1,
		MachineKey:     "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		NodeKey:        "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		DiscoKey:       "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		Name:           "test_get_shared_nodes_2",
		NamespaceID:    n2.ID,
		Registered:     true,
		RegisterMethod: "authKey",
		IPAddress:      "100.64.0.2",
		AuthKeyID:      uint(pak2.ID),
	}
	h.db.Save(&m2)

	_, err = h.GetMachine(n2.Name, m2.Name)
	c.Assert(err, check.IsNil)

	p1s, err := h.getPeers(m1)
	c.Assert(err, check.IsNil)
	c.Assert(len(*p1s), check.Equals, 0)

	err = h.AddSharedMachineToNamespace(&m1, n1)
	c.Assert(err, check.Equals, errorSameNamespace)
}

func (s *Suite) TestAlreadyShared(c *check.C) {
	n1, err := h.CreateNamespace("shared1")
	c.Assert(err, check.IsNil)

	n2, err := h.CreateNamespace("shared2")
	c.Assert(err, check.IsNil)

	pak1, err := h.CreatePreAuthKey(n1.Name, false, false, nil)
	c.Assert(err, check.IsNil)

	pak2, err := h.CreatePreAuthKey(n2.Name, false, false, nil)
	c.Assert(err, check.IsNil)

	_, err = h.GetMachine(n1.Name, "test_get_shared_nodes_1")
	c.Assert(err, check.NotNil)

	m1 := Machine{
		ID:             0,
		MachineKey:     "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
		NodeKey:        "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
		DiscoKey:       "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
		Name:           "test_get_shared_nodes_1",
		NamespaceID:    n1.ID,
		Registered:     true,
		RegisterMethod: "authKey",
		IPAddress:      "100.64.0.1",
		AuthKeyID:      uint(pak1.ID),
	}
	h.db.Save(&m1)

	_, err = h.GetMachine(n1.Name, m1.Name)
	c.Assert(err, check.IsNil)

	m2 := Machine{
		ID:             1,
		MachineKey:     "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		NodeKey:        "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		DiscoKey:       "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		Name:           "test_get_shared_nodes_2",
		NamespaceID:    n2.ID,
		Registered:     true,
		RegisterMethod: "authKey",
		IPAddress:      "100.64.0.2",
		AuthKeyID:      uint(pak2.ID),
	}
	h.db.Save(&m2)

	_, err = h.GetMachine(n2.Name, m2.Name)
	c.Assert(err, check.IsNil)

	p1s, err := h.getPeers(m1)
	c.Assert(err, check.IsNil)
	c.Assert(len(*p1s), check.Equals, 0)

	err = h.AddSharedMachineToNamespace(&m2, n1)
	c.Assert(err, check.IsNil)
	err = h.AddSharedMachineToNamespace(&m2, n1)
	c.Assert(err, check.Equals, errorMachineAlreadyShared)
}

func (s *Suite) TestDoNotIncludeRoutesOnShared(c *check.C) {
	n1, err := h.CreateNamespace("shared1")
	c.Assert(err, check.IsNil)

	n2, err := h.CreateNamespace("shared2")
	c.Assert(err, check.IsNil)

	pak1, err := h.CreatePreAuthKey(n1.Name, false, false, nil)
	c.Assert(err, check.IsNil)

	pak2, err := h.CreatePreAuthKey(n2.Name, false, false, nil)
	c.Assert(err, check.IsNil)

	_, err = h.GetMachine(n1.Name, "test_get_shared_nodes_1")
	c.Assert(err, check.NotNil)

	m1 := Machine{
		ID:             0,
		MachineKey:     "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
		NodeKey:        "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
		DiscoKey:       "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
		Name:           "test_get_shared_nodes_1",
		NamespaceID:    n1.ID,
		Registered:     true,
		RegisterMethod: "authKey",
		IPAddress:      "100.64.0.1",
		AuthKeyID:      uint(pak1.ID),
	}
	h.db.Save(&m1)

	_, err = h.GetMachine(n1.Name, m1.Name)
	c.Assert(err, check.IsNil)

	m2 := Machine{
		ID:             1,
		MachineKey:     "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		NodeKey:        "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		DiscoKey:       "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		Name:           "test_get_shared_nodes_2",
		NamespaceID:    n2.ID,
		Registered:     true,
		RegisterMethod: "authKey",
		IPAddress:      "100.64.0.2",
		AuthKeyID:      uint(pak2.ID),
	}
	h.db.Save(&m2)

	_, err = h.GetMachine(n2.Name, m2.Name)
	c.Assert(err, check.IsNil)

	p1s, err := h.getPeers(m1)
	c.Assert(err, check.IsNil)
	c.Assert(len(*p1s), check.Equals, 0)

	err = h.AddSharedMachineToNamespace(&m2, n1)
	c.Assert(err, check.IsNil)

	p1sAfter, err := h.getPeers(m1)
	c.Assert(err, check.IsNil)
	c.Assert(len(*p1sAfter), check.Equals, 1)
	c.Assert(len((*p1sAfter)[0].AllowedIPs), check.Equals, 1)
}

func (s *Suite) TestComplexSharingAcrossNamespaces(c *check.C) {
	n1, err := h.CreateNamespace("shared1")
	c.Assert(err, check.IsNil)

	n2, err := h.CreateNamespace("shared2")
	c.Assert(err, check.IsNil)

	n3, err := h.CreateNamespace("shared3")
	c.Assert(err, check.IsNil)

	pak1, err := h.CreatePreAuthKey(n1.Name, false, false, nil)
	c.Assert(err, check.IsNil)

	pak2, err := h.CreatePreAuthKey(n2.Name, false, false, nil)
	c.Assert(err, check.IsNil)

	pak3, err := h.CreatePreAuthKey(n3.Name, false, false, nil)
	c.Assert(err, check.IsNil)

	pak4, err := h.CreatePreAuthKey(n1.Name, false, false, nil)
	c.Assert(err, check.IsNil)

	_, err = h.GetMachine(n1.Name, "test_get_shared_nodes_1")
	c.Assert(err, check.NotNil)

	m1 := Machine{
		ID:             0,
		MachineKey:     "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
		NodeKey:        "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
		DiscoKey:       "686824e749f3b7f2a5927ee6c1e422aee5292592d9179a271ed7b3e659b44a66",
		Name:           "test_get_shared_nodes_1",
		NamespaceID:    n1.ID,
		Registered:     true,
		RegisterMethod: "authKey",
		IPAddress:      "100.64.0.1",
		AuthKeyID:      uint(pak1.ID),
	}
	h.db.Save(&m1)

	_, err = h.GetMachine(n1.Name, m1.Name)
	c.Assert(err, check.IsNil)

	m2 := Machine{
		ID:             1,
		MachineKey:     "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		NodeKey:        "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		DiscoKey:       "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		Name:           "test_get_shared_nodes_2",
		NamespaceID:    n2.ID,
		Registered:     true,
		RegisterMethod: "authKey",
		IPAddress:      "100.64.0.2",
		AuthKeyID:      uint(pak2.ID),
	}
	h.db.Save(&m2)

	_, err = h.GetMachine(n2.Name, m2.Name)
	c.Assert(err, check.IsNil)

	m3 := Machine{
		ID:             2,
		MachineKey:     "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		NodeKey:        "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		DiscoKey:       "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		Name:           "test_get_shared_nodes_3",
		NamespaceID:    n3.ID,
		Registered:     true,
		RegisterMethod: "authKey",
		IPAddress:      "100.64.0.3",
		AuthKeyID:      uint(pak3.ID),
	}
	h.db.Save(&m3)

	_, err = h.GetMachine(n3.Name, m3.Name)
	c.Assert(err, check.IsNil)

	m4 := Machine{
		ID:             3,
		MachineKey:     "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		NodeKey:        "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		DiscoKey:       "dec46ef9dc45c7d2f03bfcd5a640d9e24e3cc68ce3d9da223867c9bc6d5e9863",
		Name:           "test_get_shared_nodes_4",
		NamespaceID:    n1.ID,
		Registered:     true,
		RegisterMethod: "authKey",
		IPAddress:      "100.64.0.4",
		AuthKeyID:      uint(pak4.ID),
	}
	h.db.Save(&m4)

	_, err = h.GetMachine(n1.Name, m4.Name)
	c.Assert(err, check.IsNil)

	p1s, err := h.getPeers(m1)
	c.Assert(err, check.IsNil)
	c.Assert(len(*p1s), check.Equals, 1) // nodes 1 and 4

	err = h.AddSharedMachineToNamespace(&m2, n1)
	c.Assert(err, check.IsNil)

	p1sAfter, err := h.getPeers(m1)
	c.Assert(err, check.IsNil)
	c.Assert(len(*p1sAfter), check.Equals, 2) // nodes 1, 2, 4

	pAlone, err := h.getPeers(m3)
	c.Assert(err, check.IsNil)
	c.Assert(len(*pAlone), check.Equals, 0) // node 3 is alone
}