package main

import (
	"testing"

	"github.com/novox/mesh-controller/internal/catalogue"
)

// The overview of what a mesh has (novox/hq ADR 0110).

func TestEverySeatIsListedIncludingTheOnesNobodyHolds(t *testing.T) {
	// An unheld seat is an answer — "this mesh has no forge" — so it is listed rather than omitted.
	rows, _ := seatsHeld(catalogue.Seats(), []catalogue.Held{
		{Claim: "mesh-store", Scope: catalogue.ScopeMesh, Node: "anchor", Module: "postgres"},
	})
	if len(rows) != len(catalogue.Seats()) {
		t.Fatalf("%d seats listed of %d", len(rows), len(catalogue.Seats()))
	}
	for _, r := range rows {
		switch r.Seat {
		case "mesh-store":
			if len(r.Holders) != 1 || r.Holders[0].Module != "postgres" || r.Holders[0].Node != "anchor" {
				t.Errorf("mesh-store is held by %+v", r.Holders)
			}
			if r.Delivers != "postgres-database" {
				t.Errorf("mesh-store does not say what it delivers: %q", r.Delivers)
			}
		case "git":
			if len(r.Holders) != 0 {
				t.Errorf("git is held by %+v in a mesh with no forge", r.Holders)
			}
		}
	}
}

func TestANodeSeatListsEveryMachineHoldingIt(t *testing.T) {
	rows, _ := seatsHeld(catalogue.Seats(), []catalogue.Held{
		{Claim: "node-packet-filter", Scope: catalogue.ScopeNode, Node: "node2", Module: "nftables"},
		{Claim: "node-packet-filter", Scope: catalogue.ScopeNode, Node: "anchor", Module: "nftables"},
		// Resolved twice, reported once: a machine is one holder however many passes saw it.
		{Claim: "node-packet-filter", Scope: catalogue.ScopeNode, Node: "anchor", Module: "nftables"},
	})
	for _, r := range rows {
		if r.Seat != "node-packet-filter" {
			continue
		}
		if len(r.Holders) != 2 || r.Holders[0].Node != "anchor" || r.Holders[1].Node != "node2" {
			t.Fatalf("the packet filter is held by %+v", r.Holders)
		}
		return
	}
	t.Fatal("the packet filter is not listed")
}

func TestAClaimOutsideTheSetIsShownNotHidden(t *testing.T) {
	// A manifest registered before the set closed can still hold one. Leaving it out would make
	// the overview quietly incomplete, which is the one thing it may not be.
	_, outside := seatsHeld(catalogue.Seats(), []catalogue.Held{
		{Claim: "the-controller", Scope: catalogue.ScopeMesh, Node: "anchor", Module: "mesh-controller"},
	})
	if len(outside) != 1 || outside[0].Claim != "the-controller" {
		t.Fatalf("a claim outside the set was not shown: %+v", outside)
	}
}