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[HTML] Refactor renderer

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This commit is contained in:
Alexey Golub 2019-12-07 22:22:39 +02:00
parent 964317dac0
commit 41c828eb3e
1 changed files with 58 additions and 52 deletions
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110
DiscordChatExporter.Core.Rendering/HtmlMessageRenderer.cs
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@ -16,12 +16,20 @@ namespace DiscordChatExporter.Core.Rendering
private readonly string _themeName;
private readonly List<Message> _messageGroupBuffer = new List<Message>();
private readonly Template _leadingBlockTemplate;
private readonly Template _messageGroupTemplate;
private readonly Template _trailingBlockTemplate;
private bool _isLeadingBlockRendered;
public HtmlMessageRenderer(string filePath, RenderContext context, string themeName)
: base(filePath, context)
{
_themeName = themeName;
_leadingBlockTemplate = Template.Parse(GetLeadingBlockTemplateCode());
_messageGroupTemplate = Template.Parse(GetMessageGroupTemplateCode());
_trailingBlockTemplate = Template.Parse(GetTrailingBlockTemplateCode());
}
private MessageGroup GetCurrentMessageGroup()
@ -30,42 +38,69 @@ namespace DiscordChatExporter.Core.Rendering
return new MessageGroup(firstMessage.Author, firstMessage.Timestamp, _messageGroupBuffer);
}
private async Task RenderLeadingBlockAsync()
private TemplateContext CreateTemplateContext(IReadOnlyDictionary<string, object>? constants = null)
{
var template = Template.Parse(GetLeadingBlockTemplateCode());
var templateContext = CreateTemplateContext();
var scriptObject = CreateScriptObject(Context, _themeName);
// Template context
var templateContext = new TemplateContext
{
MemberRenamer = m => m.Name,
MemberFilter = m => true,
LoopLimit = int.MaxValue,
StrictVariables = true
};
templateContext.PushGlobal(scriptObject);
templateContext.PushOutput(new TextWriterOutput(Writer));
// Model
var scriptObject = new ScriptObject();
await templateContext.EvaluateAsync(template.Page);
// Constants
scriptObject.SetValue("Context", Context, true);
scriptObject.SetValue("CoreStyleSheet", GetCoreStyleSheetCode(), true);
scriptObject.SetValue("ThemeStyleSheet", GetThemeStyleSheetCode(_themeName), true);
scriptObject.SetValue("HighlightJsStyleName", $"solarized-{_themeName.ToLowerInvariant()}", true);
// Additional constants
if (constants != null)
{
foreach (var (member, value) in constants)
scriptObject.SetValue(member, value, true);
}
private async Task RenderTrailingBlockAsync()
{
var template = Template.Parse(GetTrailingBlockTemplateCode());
var templateContext = CreateTemplateContext();
var scriptObject = CreateScriptObject(Context, _themeName);
// Functions
scriptObject.Import("FormatDate",
new Func<DateTimeOffset, string>(d => SharedRenderingLogic.FormatDate(d, Context.DateFormat)));
scriptObject.Import("FormatMarkdown",
new Func<string, string>(m => HtmlRenderingLogic.FormatMarkdown(Context, m)));
// Push model
templateContext.PushGlobal(scriptObject);
// Push output
templateContext.PushOutput(new TextWriterOutput(Writer));
await templateContext.EvaluateAsync(template.Page);
return templateContext;
}
private async Task RenderLeadingBlockAsync()
{
var templateContext = CreateTemplateContext();
await templateContext.EvaluateAsync(_leadingBlockTemplate.Page);
}
private async Task RenderCurrentMessageGroupAsync()
{
var template = Template.Parse(GetMessageGroupTemplateCode());
var templateContext = CreateTemplateContext(new Dictionary<string, object>
{
["MessageGroup"] = GetCurrentMessageGroup()
});
await templateContext.EvaluateAsync(_messageGroupTemplate.Page);
}
private async Task RenderTrailingBlockAsync()
{
var templateContext = CreateTemplateContext();
var scriptObject = CreateScriptObject(Context, _themeName);
scriptObject.SetValue("MessageGroup", GetCurrentMessageGroup(), true);
templateContext.PushGlobal(scriptObject);
templateContext.PushOutput(new TextWriterOutput(Writer));
await templateContext.EvaluateAsync(template.Page);
await templateContext.EvaluateAsync(_trailingBlockTemplate.Page);
}
public override async Task RenderMessageAsync(Message message)
@ -105,6 +140,7 @@ namespace DiscordChatExporter.Core.Rendering
// Trailing block
await RenderTrailingBlockAsync();
// Dispose stream
await base.DisposeAsync();
}
}
@ -135,35 +171,5 @@ namespace DiscordChatExporter.Core.Rendering
private static string GetMessageGroupTemplateCode() =>
ResourcesAssembly
.GetManifestResourceString($"{ResourcesNamespace}.HtmlMessageGroupTemplate.html");
private static ScriptObject CreateScriptObject(RenderContext context, string themeName)
{
var scriptObject = new ScriptObject();
// Constants
scriptObject.SetValue("Context", context, true);
scriptObject.SetValue("CoreStyleSheet", GetCoreStyleSheetCode(), true);
scriptObject.SetValue("ThemeStyleSheet", GetThemeStyleSheetCode(themeName), true);
scriptObject.SetValue("HighlightJsStyleName", $"solarized-{themeName.ToLowerInvariant()}", true);
// Functions
scriptObject.Import("FormatDate",
new Func<DateTimeOffset, string>(d => SharedRenderingLogic.FormatDate(d, context.DateFormat)));
scriptObject.Import("FormatMarkdown",
new Func<string, string>(m => HtmlRenderingLogic.FormatMarkdown(context, m)));
return scriptObject;
}
private static TemplateContext CreateTemplateContext() =>
new TemplateContext
{
MemberRenamer = m => m.Name,
MemberFilter = m => true,
LoopLimit = int.MaxValue,
StrictVariables = true
};
}
}