package core

import "testing"

func TestChannel(t *testing.T) {
	db := EphemeralDb(t)
	if err := AddSource(db, "one"); err != nil {
		t.Fatalf("failed to add source: %v", err)
	}
	if err := AddSource(db, "two"); err != nil {
		t.Fatalf("failed to add source: %v", err)
	}

	// Add sources to channel
	if err := AddSourceToChannel(db, "channel", "one"); err != nil {
		t.Fatalf("failed to add source to channel: %v", err)
	}
	if err := AddSourceToChannel(db, "channel", "two"); err != nil {
		t.Fatalf("failed to add source to channel: %v", err)
	}

	// Both sources are in the channel
	sources, err := GetSourcesInChannel(db)
	if err != nil {
		t.Fatalf("failed to get sources in channel: %v", err)
	}
	if len(sources["channel"]) != 2 || sources["channel"][0] != "one" || sources["channel"][1] != "two" {
		t.Fatalf("expected two sources, got %d: %v", len(sources), sources)
	}

	// Get sources in channel after deletion
	if err := DeleteSourceFromChannel(db, "channel", "one"); err != nil {
		t.Fatalf("failed to delete source from channel: %v", err)
	}
	sources, err = GetSourcesInChannel(db)
	if err != nil {
		t.Fatalf("failed to get sources in channel: %v", err)
	}
	if len(sources) != 1 || sources["channel"][0] != "two" {
		t.Fatalf("unexpected sources in channel after deletion: %v", sources)
	}
	if err := AddSourceToChannel(db, "channel", "one"); err != nil {
		t.Fatalf("failed to add source to channel: %v", err)
	}

	// Items on both sources appear in the channel
	if err := AddItems(db, []Item{
		{Source: "one", Id: "a"},
		{Source: "two", Id: "b"},
	}); err != nil {
		t.Fatalf("failed to add items to one: %v", err)
	}
	if counts, err := GetChannelsAndActiveCounts(db); counts["channel"] != 2 || err != nil {
		t.Fatalf("expected 2 active items in channel, got %d: %v", counts["channel"], err)
	}

	if _, err := DeactivateItem(db, "one", "a"); err != nil {
		t.Fatalf("failed to deactivate item: %v", err)
	}
	if counts, err := GetChannelsAndActiveCounts(db); counts["channel"] != 1 || err != nil {
		t.Fatalf("expected 1 active items in channel, got %d: %v", counts["channel"], err)
	}

	items, err := GetAllItemsForChannel(db, "channel", 0, -1)
	if err != nil {
		t.Fatalf("failed to get all items in channel: %v", err)
	}
	if len(items) != 2 || items[0].Id != "a" || items[1].Id != "b" {
		t.Fatalf("expected two items, got %d: %v", len(items), items)
	}
	items, err = GetActiveItemsForChannel(db, "channel", 0, -1)
	if err != nil {
		t.Fatalf("failed to get all items in channel: %v", err)
	}
	if len(items) != 1 || items[0].Id != "b" {
		t.Fatalf("expected one item, got %d: %v", len(items), items)
	}
}