private IEnumerable <HeadlineInfo> GetHeadlineInfos()
{
var headlineInfos = new List <HeadlineInfo>();
Author author = CreateAuthor();
DirectoryInfo[] imageDirectories = GetDirectories("img/headlines");
int illustratedHeadlineCount = imageDirectories.Length;
int nonIllustratedHeadlineCount = illustratedHeadlineCount / 2;
int totalHeadlineCount = illustratedHeadlineCount + nonIllustratedHeadlineCount;
IReadOnlyCollection <Tag> tags = CreateTags(count: 2);
WeightedLottery <Tag> tagLottery = CreateTagLottery(tags, totalWeight: illustratedHeadlineCount);
string[] titles = CreateUniqueStringSet(
totalHeadlineCount, () => LoremIpsum.NextHeading(minWordCount: 2, maxWordCount: 8));
for (int headlineIndex = 0; headlineIndex < illustratedHeadlineCount; headlineIndex++)
{
DirectoryInfo directory = imageDirectories[headlineIndex];
var headlineInfo = new HeadlineInfo
{
Images = GetHeadlineImages(directory),
Tag = tagLottery.Pull(),
Title = titles[headlineIndex],
Author = author
};
headlineInfos.Add(headlineInfo);
}
tagLottery = CreateTagLottery(tags, totalWeight: nonIllustratedHeadlineCount);
for (int headlineIndex = illustratedHeadlineCount; headlineIndex < totalHeadlineCount; headlineIndex++)
{
var headlineInfo = new HeadlineInfo
{
Images = new List <HeadlineImage>(),
Tag = tagLottery.Pull(),
Title = titles[headlineIndex],
Author = author
};
headlineInfos.Add(headlineInfo);
}
return(headlineInfos);
}
private static WeightedLottery <Tag> CreateTagLottery(IReadOnlyCollection <Tag> tags, int totalWeight)
{
var tagLottery = new WeightedLottery <Tag>();
foreach (Tag tag in tags)
{
int tagWeight = totalWeight / tags.Count;
if (tag == tags.First())
{
// total weight: 11, tag count: 2, first tag's weight: 6, second tag's weight: 5
tagWeight += totalWeight % tags.Count;
}
tagLottery.Add(tag, tagWeight);
}
return(tagLottery);
}
