use super::{html_escape, markdown_backslash_unescape, markdown_plain_text};
use comrak::{markdown_to_html, Options};
use std::collections::HashSet;
#[path = "html_composition.rs"]
mod composition;
#[path = "html_style.rs"]
mod style;
use composition::compose_report_fragment;
use style::REPORT_CSS;
pub(super) fn deep_research_completed_report_html(query: &str, markdown: &str) -> String {
let lower_markdown = markdown.to_ascii_lowercase();
let recovery = lower_markdown.contains("# deepresearch recovery report");
let qualified = lower_markdown.contains("evidence grade: official-source snapshot")
|| markdown.contains("证据等级：官方来源快照");
let title = concise_report_title(&deep_research_markdown_report_title(markdown, query));
let language = if contains_cjk(markdown) || contains_cjk(query) {
"zh-CN"
} else {
"en"
};
let raw_body = strip_first_h1(&deep_research_markdown_to_html_fragment(markdown));
let declared_source_count = markdown_cited_source_count(markdown);
let source_count = if declared_source_count == 0 {
unique_external_source_count(&raw_body)
} else {
declared_source_count
};
let composition = compose_report_fragment(&raw_body, language);
let finding_count = composition.finding_count.max(
markdown
.lines()
.filter(|line| line.starts_with("### "))
.count(),
);
let reading_minutes = estimated_reading_minutes(markdown, language);
let theme = report_theme(query, markdown);
let body_class = if recovery {
format!("{theme} report-degraded")
} else if qualified {
format!("{theme} report-qualified")
} else {
theme.to_string()
};
let evidence_label = if recovery && language == "zh-CN" {
"证据不足 · 已降级"
} else if recovery {
"Insufficient evidence · Degraded"
} else if qualified && language == "zh-CN" {
"官方快照 · 待独立核验"
} else if qualified {
"Official snapshot · Cross-check pending"
} else if language == "zh-CN" {
"来源可追溯"
} else {
"Traceable evidence"
};
let sources_label = if language == "zh-CN" {
"引用来源"
} else {
"Cited sources"
};
let sources_separator = if language == "zh-CN" { "：" } else { ": " };
let confidence_label = if recovery && language == "zh-CN" {
"不可作为最终定论"
} else if recovery {
"Not a final domain conclusion"
} else if qualified && language == "zh-CN" {
"可交付，但不是双源定论"
} else if qualified {
"Usable, not a two-source conclusion"
} else if language == "zh-CN" {
"明确置信度与局限"
} else {
"Confidence & limits stated"
};
let brief_label = if recovery && language == "zh-CN" {
"A3S 深度研究 · 降级报告"
} else if recovery {
"A3S Deep Research · Degraded"
} else if qualified && language == "zh-CN" {
"A3S 深度研究 · 权威快照"
} else if qualified {
"A3S Deep Research · Authoritative snapshot"
} else if language == "zh-CN" {
"A3S 深度研究"
} else {
"A3S Deep Research"
};
let reading_label = if language == "zh-CN" {
"研究报告"
} else {
"Research report"
};
let metadata_label = if language == "zh-CN" {
"报告元数据"
} else {
"Report metadata"
};
let profile_label = if language == "zh-CN" {
"证据画像"
} else {
"Evidence profile"
};
let findings_label = if language == "zh-CN" {
"核心发现"
} else {
"Key findings"
};
let sections_label = if language == "zh-CN" {
"叙事章节"
} else {
"Story sections"
};
let reading_time_label = if language == "zh-CN" {
"分钟阅读"
} else {
"Min read"
};
let thesis = if recovery && language == "zh-CN" {
"本次证据链未达到完成门槛；页面仅保留可核验来源、失败边界与下一步。"
} else if recovery {
"This run did not meet the evidence gate; the page preserves only traceable sources, failure limits, and next actions."
} else if qualified && language == "zh-CN" {
"官方数据已经形成可用快照；独立来源本次未返回，因此证据等级保持为待交叉核验。"
} else if qualified {
"Official data produced a usable snapshot; the independent source did not return, so cross-verification remains pending."
} else if language == "zh-CN" {
"以可追溯证据为轴，分开展示核心结论、证据强度与尚未解决的边界。"
} else {
"A source-backed reading experience separating conclusions, evidence strength, and unresolved limits."
};
format!(
r#"<!doctype html>
<html lang="{language}">
<head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><title>{title}</title><style>{css}</style></head>
<body class="{theme}">
<header class="hero"><div class="hero-inner"><div class="hero-grid"><div><p class="eyebrow">{brief_label}</p><h1>{title}</h1><p class="hero-thesis">{thesis}</p><div class="signal-row"><span class="signal">● <b>{evidence_label}</b></span><span class="signal">{confidence_label}</span></div></div><aside class="evidence-profile" aria-label="{profile_label}"><p class="profile-label">{profile_label}</p><div class="profile-grid"><div><strong>{source_count:02}</strong><span>{sources_label}</span></div><div><strong>{finding_count:02}</strong><span>{findings_label}</span></div><div><strong>{reading_minutes:02}</strong><span>{reading_time_label}</span></div></div></aside></div></div></header>
<main><div class="report-shell"><aside class="rail" aria-label="{metadata_label}"><p class="rail-label">{reading_label}</p>{toc}<dl class="rail-stat"><dt>{sections_label}</dt><dd>{section_count:02}</dd></dl></aside><article id="report">{body}</article></div></main>
<p class="footer-note">{brief_label} · {evidence_label} · {sources_label}{sources_separator}{source_count}</p>
</body></html>
"#,
language = language,
title = html_escape(&title),
css = REPORT_CSS,
theme = body_class,
brief_label = brief_label,
thesis = thesis,
evidence_label = evidence_label,
confidence_label = confidence_label,
profile_label = profile_label,
source_count = source_count,
sources_label = sources_label,
finding_count = finding_count,
findings_label = findings_label,
reading_minutes = reading_minutes,
reading_time_label = reading_time_label,
metadata_label = metadata_label,
reading_label = reading_label,
toc = composition.toc,
sections_label = sections_label,
section_count = composition.section_count,
body = composition.body,
sources_separator = sources_separator,
)
}
fn estimated_reading_minutes(markdown: &str, language: &str) -> usize {
let units = if language == "zh-CN" {
markdown
.chars()
.filter(|ch| !ch.is_whitespace() && !ch.is_ascii_punctuation())
.count()
.div_ceil(450)
} else {
markdown.split_whitespace().count().div_ceil(220)
};
units.max(1)
}
fn report_theme(_query: &str, _markdown: &str) -> &'static str {
"theme-editorial"
}
fn unique_external_source_count(fragment: &str) -> usize {
let mut sources = HashSet::new();
let mut remaining = fragment;
while let Some(start) = remaining.find("href=\"") {
remaining = &remaining[start + "href=\"".len()..];
let Some(end) = remaining.find('"') else {
break;
};
let href = &remaining[..end];
if href.starts_with("https://") || href.starts_with("http://") {
sources.insert(href);
}
remaining = &remaining[end + 1..];
}
sources.len()
}
fn markdown_cited_source_count(markdown: &str) -> usize {
let mut in_sources = false;
let mut sources = HashSet::new();
for line in markdown.lines() {
let trimmed = line.trim();
if let Some(heading) = trimmed.strip_prefix("## ") {
let heading = heading.trim();
in_sources = heading.eq_ignore_ascii_case("sources")
|| heading.eq_ignore_ascii_case("references")
|| matches!(heading, "来源" | "资料来源" | "参考文献");
continue;
}
if !in_sources || !trimmed.starts_with("- ") {
continue;
}
let item = trimmed.trim_start_matches("- ").trim();
let url = if let Some(start) = item.find("](") {
let rest = &item[start + 2..];
rest.find(')').map(|end| &rest[..end])
} else {
[item.find("https://"), item.find("http://")]
.into_iter()
.flatten()
.min()
.map(|start| {
item[start..]
.split(|ch: char| ch.is_whitespace() || matches!(ch, ')' | ']' | '>'))
.next()
.unwrap_or_default()
.trim_end_matches(['.', ',', ';', '。', '，', '；'])
})
};
if let Some(url) =
url.filter(|url| url.starts_with("https://") || url.starts_with("http://"))
{
sources.insert(url.to_string());
}
}
sources.len()
}
fn contains_cjk(value: &str) -> bool {
value
.chars()
.any(|ch| ('\u{3400}'..='\u{9fff}').contains(&ch))
}
fn concise_report_title(value: &str) -> String {
let mut clean = value.split_whitespace().collect::<Vec<_>>().join(" ");
for prefix in ["请研究", "请分析"] {
if let Some(rest) = clean.strip_prefix(prefix) {
clean = rest
.trim_start_matches(['：', ':', '，', ',', ' '])
.to_string();
break;
}
}
for suffix in [
"…研究报告",
"研究报告",
"Deep Research Report",
"Research Report",
] {
if let Some(rest) = clean.strip_suffix(suffix) {
clean = rest
.trim_end_matches(['：', ':', '，', ',', ' ', '…', '—', '–', '-'])
.to_string();
break;
}
}
if contains_cjk(&clean) {
if let Some((subject, _)) = clean.split_once('的') {
let subject = subject.trim_end_matches(['：', ':', '，', ',', ' ', '…']);
if (4..=36).contains(&subject.chars().count()) {
return format!("{subject}研究");
}
}
}
let limit = if contains_cjk(&clean) { 40 } else { 92 };
if clean.chars().count() <= limit {
return clean;
}
let prefix = clean.chars().take(limit).collect::<String>();
let shortened = prefix
.rsplit_once(' ')
.map(|(head, _)| head)
.unwrap_or(&prefix);
format!(
"{}…",
shortened.trim_end_matches([':', ';', ',', '，', '；', '：'])
)
}
fn strip_first_h1(fragment: &str) -> String {
let Some(start) = fragment.find("<h1>") else {
return fragment.to_string();
};
let Some(relative_end) = fragment[start..].find("</h1>") else {
return fragment.to_string();
};
let end = start + relative_end + "</h1>".len();
format!("{}{}", &fragment[..start], &fragment[end..])
}
fn deep_research_markdown_report_title(markdown: &str, query: &str) -> String {
markdown
.lines()
.find_map(|line| line.trim().strip_prefix("# "))
.map(str::trim)
.filter(|title| !title.is_empty())
.map(markdown_backslash_unescape)
.unwrap_or_else(|| markdown_backslash_unescape(&markdown_plain_text(query)))
}
fn deep_research_markdown_to_html_fragment(markdown: &str) -> String {
let mut options = Options::default();
options.extension.table = true;
options.extension.autolink = true;
options.render.unsafe_ = false;
options.render.escape = true;
strip_relative_report_links(&markdown_to_html(markdown, &options))
}
fn strip_relative_report_links(fragment: &str) -> String {
let mut output = String::with_capacity(fragment.len());
let mut remaining = fragment;
while let Some(anchor_start) = remaining.find("<a href=\"") {
output.push_str(&remaining[..anchor_start]);
let anchor = &remaining[anchor_start..];
let href = &anchor["<a href=\"".len()..];
let Some(href_end) = href.find('"') else {
output.push_str(anchor);
return output;
};
let href_value = &href[..href_end];
let Some(open_end) = anchor.find('>') else {
output.push_str(anchor);
return output;
};
let allowed = href_value.is_empty()
|| href_value.starts_with('#')
|| href_value.starts_with("https://")
|| href_value.starts_with("http://")
|| href_value.starts_with("mailto:");
if allowed {
output.push_str(&anchor[..=open_end]);
remaining = &anchor[open_end + 1..];
continue;
}
let inner = &anchor[open_end + 1..];
let Some(close_start) = inner.find("</a>") else {
output.push_str(inner);
return output;
};
output.push_str(&inner[..close_start]);
remaining = &inner[close_start + "</a>".len()..];
}
output.push_str(remaining);
output
}
#[cfg(test)]
#[path = "html_tests.rs"]
mod tests;