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#include "Blog.hpp"
#include <filesystem>
Blog::Blog(std::string uriBasePath, std::string mainTemplatePath, std::string blogPath)
: Content(),
m_UriBasePath(uriBasePath),
m_MainTemplatePath(mainTemplatePath),
m_BlogPath(blogPath),
m_BlogContents("", blogPath)
{
m_Redirections.push_back(uriBasePath + "/");
m_Redirections.push_back(uriBasePath + "/index.html");
}
bool Blog::Init()
{
bool retval = true;
std::cout << "Blog entries filesystem path: " << m_BlogPath << std::endl;
std::cout << "Blog entries URI base path: " << m_UriBasePath << std::endl;
std::vector<std::string> extensions = {"json"};
Filesystem fs;
if (fs.Scan(m_BlogPath, extensions, false) == false)
{
return false;
}
for (auto const & jfile : fs.GetFiles())
{
auto const json_metadata = inja::json::parse(jfile.second.data);
BlogEntry be =
std::make_shared<struct blog_entry>(jfile.first,
std::string(std::filesystem::path(jfile.first).stem()) + ".md");
if (Blog::ValidateAndSetMetdadata(json_metadata, be) == false)
{
std::cerr << "Blog Metadata validation failed." << std::endl;
retval = false;
}
m_BlogEntriesSortedByDate.push_back(be);
m_Redirections.push_back(m_UriBasePath + "/" + std::string(std::filesystem::path(jfile.first).stem()));
}
std::sort(m_BlogEntriesSortedByDate.begin(),
m_BlogEntriesSortedByDate.end(),
[](auto const & a, auto const & b) { return a->publishDate > b->publishDate; });
m_BlogContents.Init();
if (retval == false)
{
return false;
}
return ValidateEntries();
}
void Blog::Shutdown()
{
std::cout << "Blog module shutdown" << std::endl;
m_BlogContents.Shutdown();
}
bool Blog::Render(RequestResponse & rr, RenderData & rd, std::string & out)
{
(void)rr;
(void)rd;
(void)out;
if (rr.GetUriPath() == m_UriBasePath || rr.GetUriPath() == m_UriBasePath + "/" ||
rr.GetUriPath() == m_UriBasePath + "/index.html")
{
GenerateBlogListing(rd["blog_listing"]);
}
else
{
rd["blog_content"] = "bla";
}
return true;
}
std::string & Blog::GetUriBasePath()
{
return m_UriBasePath;
}
std::string const & Blog::GetMainTemplate() const
{
return m_MainTemplatePath;
}
Redirections & Blog::GetRedirections()
{
return m_Redirections;
}
bool Blog::ValidateAndSetMetdadata(BlogMetadata const & blogMetadata, BlogEntry & blogEntry)
{
bool retval = true;
std::function<bool(BlogMetadata const &, std::string const)> validateMetadata =
[blogEntry](BlogMetadata const & bm, std::string const tname)
{
if (bm.find(tname) == bm.cend())
{
std::cerr << "Metadata validation: JSON key '" << tname << "' missing in " << blogEntry->metadata_filename
<< std::endl;
return false;
}
return true;
};
std::function<bool(std::string const &, std::time_t &)> parseDateTime =
[](std::string const & timeStr, std::time_t & time)
{
std::tm tm = {};
std::stringstream ss(timeStr);
ss >> std::get_time(&tm, "%d.%m.%y %H:%M");
time = std::mktime(&tm);
if (time <= 0)
{
std::cerr << "Metadata validation: Invalid time string '" << timeStr
<< "', format required: '%d.%m.%y %H:%M'" << std::endl;
return false;
}
return true;
};
if (validateMetadata(blogMetadata, "title") == false)
{
retval = false;
}
blogEntry->title = blogMetadata["title"];
if (validateMetadata(blogMetadata, "tags") == false)
{
retval = false;
}
for (auto const & tag : blogMetadata["tags"])
{
blogEntry->tags.push_back(tag);
}
if (validateMetadata(blogMetadata, "author") == false)
{
retval = false;
}
blogEntry->author = blogMetadata["author"];
if (validateMetadata(blogMetadata, "createDate") == false ||
parseDateTime(blogMetadata["createDate"], blogEntry->createDate) == false)
{
retval = false;
}
if (validateMetadata(blogMetadata, "publishDate") == false ||
parseDateTime(blogMetadata["publishDate"], blogEntry->publishDate) == false)
{
retval = false;
}
if (validateMetadata(blogMetadata, "published") == false)
{
retval = false;
}
blogEntry->published = blogMetadata["published"];
return retval;
}
bool Blog::ValidateEntries() const
{
bool retval = true;
for (auto const & e : m_BlogEntriesSortedByDate)
{
if (m_BlogContents.HasMarkdownFile(e->content_filename) == false)
{
std::cerr << "Blog entry metadata " << e->metadata_filename << " exists, but markdown file "
<< e->content_filename << " not." << std::endl;
retval = false;
}
}
for (auto const & m : m_BlogContents.GetMarkdowns())
{
if (std::any_of(m_BlogEntriesSortedByDate.cbegin(),
m_BlogEntriesSortedByDate.cend(),
[m](BlogEntry const & be) { return m.first == be->content_filename; }) == false)
{
std::cerr << "Blog entry markdown " << m.first << " exists, but metadata not." << std::endl;
retval = false;
}
}
return retval;
}
void Blog::GenerateBlogListing(RenderData & rd)
{
for (auto const & e : m_BlogEntriesSortedByDate)
{
if (e->published == false)
{
continue;
}
RenderData re;
re["metadata_filename"] = e->metadata_filename;
re["content_filename"] = e->content_filename;
re["title"] = e->title;
re["tags"] = e->tags;
re["author"] = e->author;
re["createDate"] = e->createDate;
re["publishDate"] = e->publishDate;
re["published"] = e->published;
if (m_BlogContents.HasMarkdownFile(e->content_filename) == true)
{
re["content"] = m_BlogContents.GetMarkdownHTML(e->content_filename)->c_str();
}
else
{
re["content"] = "";
}
rd += re;
}
}
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