web: refactor code into separate modules

web/src/api.rs

@@ -0,0 +1,86 @@
+use log::info;
+use notmuch::ThreadSet;
+use seed::{prelude::*, Url};
+use serde::de::Deserialize;
+
+const BASE_URL: &str = "/api";
+pub fn refresh() -> String {
+    format!("{BASE_URL}/refresh")
+}
+pub fn search(query: &str, page: usize, results_per_page: usize) -> String {
+    let query = Url::encode_uri_component(query);
+    format!("{BASE_URL}/search/{query}?page={page}&results_per_page={results_per_page}")
+}
+pub fn show(tid: &str) -> String {
+    format!("{BASE_URL}/show/{tid}")
+}
+pub fn show_pretty(tid: &str) -> String {
+    format!("{BASE_URL}/show/{tid}/pretty")
+}
+pub fn original(message_id: &str) -> String {
+    format!("{BASE_URL}/original/{message_id}")
+}
+pub mod urls {
+    use seed::Url;
+    pub fn search(query: &str, page: usize) -> Url {
+        let query = Url::encode_uri_component(query);
+        if page > 0 {
+            Url::new().set_hash_path(["s", &query, &format!("p{page}")])
+        } else {
+            Url::new().set_hash_path(["s", &query])
+        }
+    }
+    pub fn thread(tid: &str) -> Url {
+        Url::new().set_hash_path(["t", tid])
+    }
+}
+
+pub async fn search_request(
+    query: &str,
+    page: usize,
+    results_per_page: usize,
+) -> fetch::Result<shared::SearchResult> {
+    Request::new(search(query, page, results_per_page))
+        .method(Method::Get)
+        .fetch()
+        .await?
+        .check_status()?
+        .json()
+        .await
+}
+
+pub async fn refresh_request() -> fetch::Result<()> {
+    let t = Request::new(refresh())
+        .method(Method::Get)
+        .fetch()
+        .await?
+        .check_status()?
+        .text()
+        .await?;
+    info!("refresh {t}");
+    Ok(())
+}
+
+pub async fn show_request(tid: &str) -> fetch::Result<ThreadSet> {
+    let b = Request::new(show(tid))
+        .method(Method::Get)
+        .fetch()
+        .await?
+        .check_status()?
+        .bytes()
+        .await?;
+    let mut deserializer = serde_json::Deserializer::from_slice(&b);
+    deserializer.disable_recursion_limit();
+    Ok(ThreadSet::deserialize(&mut deserializer)
+        .map_err(|_| FetchError::JsonError(fetch::JsonError::Serde(JsValue::NULL)))?)
+}
+
+pub async fn show_pretty_request(tid: &str) -> fetch::Result<ThreadSet> {
+    Request::new(show_pretty(tid))
+        .method(Method::Get)
+        .fetch()
+        .await?
+        .check_status()?
+        .json()
+        .await
+}

web/src/consts.rs

@@ -0,0 +1,2 @@
+pub const SEARCH_RESULTS_PER_PAGE: usize = 20;
+pub const USE_GRAPHQL: bool = true;

web/src/model.rs

@@ -0,0 +1 @@
+

web/src/state.rs

@@ -0,0 +1,406 @@
+use graphql_client::GraphQLQuery;
+use log::{debug, info};
+use notmuch::ThreadSet;
+use seed::{prelude::*, *};
+use thiserror::Error;
+
+use crate::{
+    api,
+    api::urls,
+    consts::{SEARCH_RESULTS_PER_PAGE, USE_GRAPHQL},
+    graphql,
+    graphql::{front_page_query::*, send_graphql, show_thread_query::*},
+};
+
+// `init` describes what should happen when your app started.
+pub fn init(url: Url, orders: &mut impl Orders<Msg>) -> Model {
+    if url.hash().is_none() {
+        orders.request_url(urls::search("is:unread", 0));
+    } else {
+        orders.notify(subs::UrlRequested::new(url));
+    };
+    orders.subscribe(on_url_changed);
+
+    Model {
+        context: Context::None,
+        query: "".to_string(),
+        refreshing_state: RefreshingState::None,
+        ui_error: UIError::NoError,
+        tags: None,
+    }
+}
+
+fn on_url_changed(uc: subs::UrlChanged) -> Msg {
+    let mut url = uc.0;
+    info!(
+        "url changed '{}', history {}",
+        url,
+        history().length().unwrap_or(0)
+    );
+    let hpp = url.remaining_hash_path_parts();
+    match hpp.as_slice() {
+        ["t", tid] => {
+            if USE_GRAPHQL {
+                Msg::ShowThreadRequest {
+                    thread_id: tid.to_string(),
+                }
+            } else {
+                Msg::ShowPrettyRequest(tid.to_string())
+            }
+        }
+        ["s", query] => {
+            let query = Url::decode_uri_component(query).unwrap_or("".to_string());
+            if USE_GRAPHQL {
+                Msg::FrontPageRequest {
+                    query,
+                    after: None,
+                    before: None,
+                    first: None,
+                    last: None,
+                }
+            } else {
+                Msg::SearchRequest {
+                    query,
+                    page: 0,
+                    results_per_page: SEARCH_RESULTS_PER_PAGE,
+                }
+            }
+        }
+        ["s", query, page] => {
+            let query = Url::decode_uri_component(query).unwrap_or("".to_string());
+            let page = page[1..].parse().unwrap_or(0);
+            if USE_GRAPHQL {
+                Msg::FrontPageRequest {
+                    query,
+                    after: Some(page.to_string()),
+                    before: None,
+                    first: None,
+                    last: None,
+                }
+            } else {
+                Msg::SearchRequest {
+                    query,
+                    page,
+                    results_per_page: SEARCH_RESULTS_PER_PAGE,
+                }
+            }
+        }
+        p => {
+            if !p.is_empty() {
+                info!("Unhandled path '{p:?}'");
+            }
+            if USE_GRAPHQL {
+                Msg::FrontPageRequest {
+                    query: "".to_string(),
+                    after: None,
+                    before: None,
+                    first: None,
+                    last: None,
+                }
+            } else {
+                Msg::SearchRequest {
+                    query: "".to_string(),
+                    page: 0,
+                    results_per_page: SEARCH_RESULTS_PER_PAGE,
+                }
+            }
+        }
+    }
+}
+
+// `update` describes how to handle each `Msg`.
+pub fn update(msg: Msg, model: &mut Model, orders: &mut impl Orders<Msg>) {
+    match msg {
+        Msg::Noop => {}
+        Msg::RefreshStart => {
+            model.refreshing_state = RefreshingState::Loading;
+            orders.perform_cmd(async move { Msg::RefreshDone(api::refresh_request().await.err()) });
+        }
+        Msg::RefreshDone(err) => {
+            model.refreshing_state = if let Some(err) = err {
+                RefreshingState::Error(format!("{:?}", err))
+            } else {
+                RefreshingState::None
+            };
+            orders.perform_cmd(async move { Msg::Reload });
+        }
+        Msg::Reload => {
+            orders.perform_cmd(async move { on_url_changed(subs::UrlChanged(Url::current())) });
+        }
+
+        Msg::SearchRequest {
+            query,
+            page,
+            results_per_page,
+        } => {
+            info!("searching for '{query}' pg {page} # / pg {results_per_page}");
+            model.query = query.clone();
+            orders.skip().perform_cmd(async move {
+                Msg::SearchResult(api::search_request(&query, page, results_per_page).await)
+            });
+        }
+        Msg::SearchResult(Ok(response_data)) => {
+            debug!("fetch ok {:#?}", response_data);
+            model.context = Context::Search(response_data);
+        }
+        Msg::SearchResult(Err(fetch_error)) => {
+            error!("fetch failed {:?}", fetch_error);
+        }
+
+        Msg::ShowRequest(tid) => {
+            orders
+                .skip()
+                .perform_cmd(async move { Msg::ShowResult(api::show_request(&tid).await) });
+        }
+        Msg::ShowResult(Ok(response_data)) => {
+            debug!("fetch ok {:#?}", response_data);
+            model.context = Context::Thread(response_data);
+        }
+        Msg::ShowResult(Err(fetch_error)) => {
+            error!("fetch failed {:?}", fetch_error);
+        }
+
+        Msg::ShowPrettyRequest(tid) => {
+            orders.skip().perform_cmd(async move {
+                Msg::ShowPrettyResult(api::show_pretty_request(&tid).await)
+            });
+        }
+        Msg::ShowPrettyResult(Ok(response_data)) => {
+            debug!("fetch ok {:#?}", response_data);
+            model.context = Context::Thread(response_data);
+        }
+        Msg::ShowPrettyResult(Err(fetch_error)) => {
+            error!("fetch failed {:?}", fetch_error);
+        }
+        Msg::NextPage => {
+            match &model.context {
+                Context::Search(sr) => {
+                    orders.request_url(urls::search(&sr.query, sr.page + 1));
+                }
+                Context::SearchResult { query, pager, .. } => {
+                    let query = query.to_string();
+                    let after = pager.end_cursor.clone();
+                    orders.perform_cmd(async move {
+                        Msg::FrontPageRequest {
+                            query,
+                            after,
+                            before: None,
+                            first: Some(SEARCH_RESULTS_PER_PAGE as i64),
+                            last: None,
+                        }
+                    });
+                }
+                Context::Thread(_) => (),       // do nothing (yet?)
+                Context::ThreadResult(_) => (), // do nothing (yet?)
+                Context::None => (),            // do nothing (yet?)
+            };
+        }
+        Msg::PreviousPage => {
+            match &model.context {
+                Context::Search(sr) => {
+                    orders.request_url(urls::search(&sr.query, sr.page.saturating_sub(1)));
+                }
+                Context::SearchResult { query, pager, .. } => {
+                    let query = query.to_string();
+                    let before = pager.start_cursor.clone();
+                    orders.perform_cmd(async move {
+                        Msg::FrontPageRequest {
+                            query,
+                            after: None,
+                            before,
+                            first: None,
+                            last: Some(SEARCH_RESULTS_PER_PAGE as i64),
+                        }
+                    });
+                }
+
+                Context::Thread(_) => (),       // do nothing (yet?)
+                Context::ThreadResult(_) => (), // do nothing (yet?)
+                Context::None => (),            // do nothing (yet?)
+            };
+        }
+
+        Msg::UpdateQuery(query) => model.query = query,
+        Msg::SearchQuery(query) => {
+            orders.request_url(urls::search(&query, 0));
+        }
+
+        Msg::FrontPageRequest {
+            query,
+            after,
+            before,
+            first,
+            last,
+        } => {
+            info!("making FrontPageRequest: {query} after:{after:?} before:{before:?} first:{first:?} last:{last:?}");
+            model.query = query.clone();
+            orders.skip().perform_cmd(async move {
+                Msg::FrontPageResult(
+                    send_graphql(graphql::FrontPageQuery::build_query(
+                        graphql::front_page_query::Variables {
+                            query,
+                            after,
+                            before,
+                            first,
+                            last,
+                        },
+                    ))
+                    .await,
+                )
+            });
+        }
+        Msg::FrontPageResult(Err(e)) => error!("error FrontPageResult: {e:?}"),
+        Msg::FrontPageResult(Ok(graphql_client::Response {
+            data: None,
+            errors: None,
+            ..
+        })) => {
+            error!("FrontPageResult no data or errors, should not happen");
+        }
+        Msg::FrontPageResult(Ok(graphql_client::Response {
+            data: None,
+            errors: Some(e),
+            ..
+        })) => {
+            error!("FrontPageResult error: {e:?}");
+        }
+        Msg::FrontPageResult(Ok(graphql_client::Response {
+            data: Some(data), ..
+        })) => {
+            model.tags = Some(
+                data.tags
+                    .into_iter()
+                    .map(|t| Tag {
+                        name: t.name,
+                        bg_color: t.bg_color,
+                        fg_color: t.fg_color,
+                        unread: t.unread,
+                    })
+                    .collect(),
+            );
+            model.context = Context::SearchResult {
+                query: model.query.clone(),
+                results: data.search.nodes,
+                count: data.count as usize,
+                pager: data.search.page_info,
+            };
+        }
+
+        Msg::ShowThreadRequest { thread_id } => {
+            orders.skip().perform_cmd(async move {
+                Msg::ShowThreadResult(
+                    send_graphql(graphql::ShowThreadQuery::build_query(
+                        graphql::show_thread_query::Variables { thread_id },
+                    ))
+                    .await,
+                )
+            });
+        }
+        Msg::ShowThreadResult(Ok(graphql_client::Response {
+            data: Some(data), ..
+        })) => {
+            model.tags = Some(
+                data.tags
+                    .into_iter()
+                    .map(|t| Tag {
+                        name: t.name,
+                        bg_color: t.bg_color,
+                        fg_color: t.fg_color,
+                        unread: t.unread,
+                    })
+                    .collect(),
+            );
+            model.context = Context::ThreadResult(data.thread);
+        }
+        Msg::ShowThreadResult(bad) => {
+            error!("show_thread_query error: {bad:?}");
+        }
+    }
+}
+// `Model` describes our app state.
+pub struct Model {
+    pub query: String,
+    pub context: Context,
+    pub refreshing_state: RefreshingState,
+    pub ui_error: UIError,
+    pub tags: Option<Vec<Tag>>,
+}
+
+#[derive(Error, Debug)]
+pub enum UIError {
+    #[error("No error, this should never be presented to user")]
+    NoError,
+    #[error("failed to fetch {0}: {1:?}")]
+    FetchError(&'static str, FetchError),
+    #[error("{0} error decoding: {1:?}")]
+    FetchDecodeError(&'static str, Vec<graphql_client::Error>),
+    #[error("no data or errors for {0}")]
+    NoData(&'static str),
+}
+
+pub enum Context {
+    None,
+    Search(shared::SearchResult),
+    SearchResult {
+        query: String,
+        results: Vec<FrontPageQuerySearchNodes>,
+        count: usize,
+        pager: FrontPageQuerySearchPageInfo,
+    },
+    Thread(ThreadSet),
+    ThreadResult(ShowThreadQueryThread),
+}
+
+pub struct Tag {
+    pub name: String,
+    pub bg_color: String,
+    pub fg_color: String,
+    pub unread: i64,
+}
+
+#[derive(Debug, PartialEq)]
+pub enum RefreshingState {
+    None,
+    Loading,
+    Error(String),
+}
+// `Msg` describes the different events you can modify state with.
+pub enum Msg {
+    Noop,
+    // Tell the client to refresh its state
+    Reload,
+    // Tell the server to update state
+    RefreshStart,
+    RefreshDone(Option<FetchError>),
+    SearchRequest {
+        query: String,
+        page: usize,
+        results_per_page: usize,
+    },
+    SearchResult(fetch::Result<shared::SearchResult>),
+    ShowRequest(String),
+    ShowResult(fetch::Result<ThreadSet>),
+    ShowPrettyRequest(String),
+    ShowPrettyResult(fetch::Result<ThreadSet>),
+    NextPage,
+    PreviousPage,
+    UpdateQuery(String),
+    SearchQuery(String),
+
+    FrontPageRequest {
+        query: String,
+        after: Option<String>,
+        before: Option<String>,
+        first: Option<i64>,
+        last: Option<i64>,
+    },
+    FrontPageResult(
+        fetch::Result<graphql_client::Response<graphql::front_page_query::ResponseData>>,
+    ),
+    ShowThreadRequest {
+        thread_id: String,
+    },
+    ShowThreadResult(
+        fetch::Result<graphql_client::Response<graphql::show_thread_query::ResponseData>>,
+    ),
+}

web/src/view.rs

@@ -0,0 +1,848 @@
+use std::{
+    collections::hash_map::DefaultHasher,
+    hash::{Hash, Hasher},
+};
+
+use chrono::{DateTime, Datelike, Duration, Local, Utc};
+use itertools::Itertools;
+use log::info;
+use notmuch::{Content, Part, ThreadNode, ThreadSet};
+use seed::{prelude::*, *};
+use seed_hooks::{state_access::CloneState, topo, use_state};
+use wasm_timer::Instant;
+
+use crate::{
+    api,
+    api::urls,
+    consts::{SEARCH_RESULTS_PER_PAGE, USE_GRAPHQL},
+    graphql::{front_page_query::*, show_thread_query::*},
+    state::{Context, Model, Msg, RefreshingState, Tag},
+};
+
+fn view_message(thread: &ThreadNode) -> Node<Msg> {
+    let message = thread.0.as_ref().expect("ThreadNode missing Message");
+    let children = &thread.1;
+    div![
+        C!["message"],
+        /* TODO(wathiede): collect all the tags and show them here. */
+        /* TODO(wathiede): collect all the attachments from all the subparts */
+        div![C!["header"], "From: ", &message.headers.from],
+        div![C!["header"], "Date: ", &message.headers.date],
+        div![C!["header"], "To: ", &message.headers.to],
+        div![
+            C!["body"],
+            match &message.body {
+                Some(body) => view_body(body.as_slice()),
+                None => div!["<no body>"],
+            },
+        ],
+        children.iter().map(view_message)
+    ]
+}
+
+fn view_body(body: &[Part]) -> Node<Msg> {
+    div![body.iter().map(view_part)]
+}
+
+fn view_text_plain(content: &Option<Content>) -> Node<Msg> {
+    match &content {
+        Some(Content::String(content)) => p![C!["view-part-text-plain"], content],
+        _ => div![
+            C!["error"],
+            format!("Unhandled content enum for text/plain"),
+        ],
+    }
+}
+
+fn view_part(part: &Part) -> Node<Msg> {
+    match part.content_type.as_str() {
+        "text/plain" => view_text_plain(&part.content),
+        "text/html" => {
+            if let Some(Content::String(html)) = &part.content {
+                let inliner = css_inline::CSSInliner::options()
+                    .load_remote_stylesheets(false)
+                    .remove_style_tags(true)
+                    .build();
+                let inlined = inliner.inline(html).expect("failed to inline CSS");
+
+                return div![C!["view-part-text-html"], raw![&inlined]];
+            } else {
+                div![
+                    C!["error"],
+                    format!("Unhandled content enum for multipart/mixed"),
+                ]
+            }
+        }
+
+        // https://en.wikipedia.org/wiki/MIME#alternative
+        // RFC1341 states: In general, user agents that compose multipart/alternative entities
+        // should place the body parts in increasing order of preference, that is, with the
+        // preferred format last.
+        "multipart/alternative" => {
+            if let Some(Content::Multipart(parts)) = &part.content {
+                for part in parts.iter().rev() {
+                    if part.content_type == "text/html" {
+                        if let Some(Content::String(html)) = &part.content {
+                            let inliner = css_inline::CSSInliner::options()
+                                .load_remote_stylesheets(false)
+                                .remove_style_tags(true)
+                                .build();
+                            let inlined = inliner.inline(html).expect("failed to inline CSS");
+                            return div![Node::from_html(None, &inlined)];
+                        }
+                    }
+                    if part.content_type == "text/plain" {
+                        return view_text_plain(&part.content);
+                    }
+                }
+                div!["No known  multipart/alternative parts"]
+            } else {
+                div![
+                    C!["error"],
+                    format!("multipart/alternative with non-multipart content"),
+                ]
+            }
+        }
+        "multipart/mixed" => match &part.content {
+            Some(Content::Multipart(parts)) => div![parts.iter().map(view_part)],
+            _ => div![
+                C!["error"],
+                format!("Unhandled content enum for multipart/mixed"),
+            ],
+        },
+        _ => div![
+            C!["error"],
+            format!("Unhandled content type: {}", part.content_type)
+        ],
+    }
+}
+
+fn first_subject(thread: &ThreadNode) -> Option<String> {
+    if let Some(msg) = &thread.0 {
+        return Some(msg.headers.subject.clone());
+    } else {
+        for tn in &thread.1 {
+            if let Some(s) = first_subject(&tn) {
+                return Some(s);
+            }
+        }
+    }
+    None
+}
+fn set_title(title: &str) {
+    seed::document().set_title(&format!("lb: {}", title));
+}
+
+fn tags_chiclet(tags: &[String], is_mobile: bool) -> impl Iterator<Item = Node<Msg>> + '_ {
+    tags.iter().map(move |tag| {
+        let mut hasher = DefaultHasher::new();
+        tag.hash(&mut hasher);
+        let hex = format!("#{:06x}", hasher.finish() % (1 << 24));
+        let style = style! {St::BackgroundColor=>hex};
+        let classes = C!["tag", IF!(is_mobile => "is-small")];
+        let tag = tag.clone();
+        a![
+            attrs! {
+                At::Href => urls::search(&format!("tag:{tag}"), 0)
+            },
+            match tag.as_str() {
+                "attachment" => span![classes, style, "📎"],
+                "replied" => span![classes, style, i![C!["fa-solid", "fa-reply"]]],
+                _ => span![classes, style, &tag],
+            },
+            ev(Ev::Click, move |_| Msg::SearchRequest {
+                query: format!("tag:{tag}"),
+                page: 0,
+                results_per_page: SEARCH_RESULTS_PER_PAGE,
+            })
+        ]
+    })
+}
+
+fn pretty_authors(authors: &str) -> impl Iterator<Item = Node<Msg>> + '_ {
+    let one_person = authors.matches(',').count() == 0;
+    let authors = authors.split(',');
+
+    Itertools::intersperse(
+        authors.filter_map(move |author| {
+            if one_person {
+                return Some(span![
+                    attrs! {
+                    At::Title => author.trim()},
+                    author
+                ]);
+            }
+            author.split_whitespace().nth(0).map(|first| {
+                span![
+                    attrs! {
+                    At::Title => author.trim()},
+                    first
+                ]
+            })
+        }),
+        span![", "],
+    )
+}
+
+fn human_age(timestamp: i64) -> String {
+    let now = Local::now();
+    let yesterday = now - Duration::days(1);
+    let ts = DateTime::<Utc>::from_timestamp(timestamp, 0)
+        .unwrap()
+        .with_timezone(&Local);
+    let age = now - ts;
+    let datetime = if age < Duration::minutes(1) {
+        format!("{} min. ago", age.num_seconds())
+    } else if age < Duration::hours(1) {
+        format!("{} min. ago", age.num_minutes())
+    } else if ts.date_naive() == now.date_naive() {
+        ts.format("Today %H:%M").to_string()
+    } else if ts.date_naive() == yesterday.date_naive() {
+        ts.format("Yest. %H:%M").to_string()
+    } else if age < Duration::weeks(1) {
+        ts.format("%a %H:%M").to_string()
+    } else if ts.year() == now.year() {
+        ts.format("%b %d %H:%M").to_string()
+    } else {
+        ts.format("%b %d, %Y %H:%M").to_string()
+    };
+    datetime
+}
+
+fn view_mobile_search_results(
+    query: &str,
+    results: &[FrontPageQuerySearchNodes],
+    count: usize,
+    pager: &FrontPageQuerySearchPageInfo,
+) -> Node<Msg> {
+    if query.is_empty() {
+        set_title("all mail");
+    } else {
+        set_title(query);
+    }
+    let rows = results.iter().map(|r| {
+        let tid = r.thread.clone();
+        let datetime = human_age(r.timestamp as i64);
+        a![
+            C!["has-text-light"],
+            attrs! {
+                At::Href => urls::thread(&tid)
+            },
+            div![
+                C!["row"],
+                div![C!["subject"], &r.subject],
+                span![C!["from", "is-size-7"], pretty_authors(&r.authors)],
+                div![
+                    span![C!["is-size-7"], tags_chiclet(&r.tags, true)],
+                    span![C!["is-size-7", "float-right", "date"], datetime]
+                ]
+            ]
+        ]
+    });
+    div![
+        C!["search-results"],
+        view_search_pager(count, pager),
+        rows,
+        view_search_pager(count, pager),
+    ]
+}
+
+fn view_mobile_search_results_legacy(
+    query: &str,
+    search_results: &shared::SearchResult,
+) -> Node<Msg> {
+    if query.is_empty() {
+        set_title("all mail");
+    } else {
+        set_title(query);
+    }
+    let summaries = &search_results.summary.0;
+    let rows = summaries.iter().map(|r| {
+        /*
+        let tid = r.thread.clone();
+        tr![
+        td![
+        C!["from"],
+        pretty_authors(&r.authors),
+        IF!(r.total>1 => small![" ", r.total.to_string()]),
+        ],
+        td![C!["subject"], tags_chiclet(&r.tags), " ", &r.subject],
+        td![C!["date"], &r.date_relative],
+        ev(Ev::Click, move |_| Msg::ShowPrettyRequest(tid)),
+        ]
+        */
+        let tid = r.thread.clone();
+        let datetime = human_age(r.timestamp as i64);
+        a![
+            C!["has-text-light"],
+            attrs! {
+                At::Href => urls::thread(&tid)
+            },
+            div![
+                C!["row"],
+                div![C!["subject"], &r.subject],
+                span![C!["from", "is-size-7"], pretty_authors(&r.authors)],
+                div![
+                    span![C!["is-size-7"], tags_chiclet(&r.tags, true)],
+                    span![C!["is-size-7", "float-right", "date"], datetime]
+                ]
+            ]
+        ]
+    });
+    let first = search_results.page * search_results.results_per_page;
+    div![
+        C!["search-results"],
+        view_search_pager_legacy(first, summaries.len(), search_results.total),
+        rows,
+        view_search_pager_legacy(first, summaries.len(), search_results.total)
+    ]
+}
+
+fn view_search_results(
+    query: &str,
+    results: &[FrontPageQuerySearchNodes],
+    count: usize,
+    pager: &FrontPageQuerySearchPageInfo,
+) -> Node<Msg> {
+    info!("pager {pager:?}");
+    if query.is_empty() {
+        set_title("all mail");
+    } else {
+        set_title(query);
+    }
+    let rows = results.iter().map(|r| {
+        let tid = r.thread.clone();
+        let datetime = human_age(r.timestamp as i64);
+        tr![
+            td![
+                C!["from"],
+                pretty_authors(&r.authors),
+                // TODO(wathiede): visualize message count if more than one message is in the
+                // thread
+                //IF!(r.total>1 => small![" ", r.total.to_string()]),
+            ],
+            td![
+                C!["subject"],
+                tags_chiclet(&r.tags, false),
+                " ",
+                a![
+                    C!["has-text-light"],
+                    attrs! {
+                        At::Href => urls::thread(&tid)
+                    },
+                    &r.subject,
+                ]
+            ],
+            td![C!["date"], datetime]
+        ]
+    });
+
+    div![
+        view_search_pager(count, pager),
+        table![
+            C![
+                "table",
+                "index",
+                "is-fullwidth",
+                "is-hoverable",
+                "is-narrow",
+                "is-striped",
+            ],
+            thead![tr![
+                th![C!["from"], "From"],
+                th![C!["subject"], "Subject"],
+                th![C!["date"], "Date"]
+            ]],
+            tbody![rows]
+        ],
+        view_search_pager(count, pager)
+    ]
+}
+
+fn view_search_results_legacy(query: &str, search_results: &shared::SearchResult) -> Node<Msg> {
+    if query.is_empty() {
+        set_title("all mail");
+    } else {
+        set_title(query);
+    }
+    let summaries = &search_results.summary.0;
+    let rows = summaries.iter().map(|r| {
+        let tid = r.thread.clone();
+        let datetime = human_age(r.timestamp as i64);
+        tr![
+            td![
+                C!["from"],
+                pretty_authors(&r.authors),
+                IF!(r.total>1 => small![" ", r.total.to_string()]),
+            ],
+            td![
+                C!["subject"],
+                tags_chiclet(&r.tags, false),
+                " ",
+                a![
+                    C!["has-text-light"],
+                    attrs! {
+                        At::Href => urls::thread(&tid)
+                    },
+                    &r.subject,
+                ]
+            ],
+            td![C!["date"], datetime]
+        ]
+    });
+    let first = search_results.page * search_results.results_per_page;
+    div![
+        view_search_pager_legacy(first, summaries.len(), search_results.total),
+        table![
+            C![
+                "table",
+                "index",
+                "is-fullwidth",
+                "is-hoverable",
+                "is-narrow",
+                "is-striped",
+            ],
+            thead![tr![
+                th![C!["from"], "From"],
+                th![C!["subject"], "Subject"],
+                th![C!["date"], "Date"]
+            ]],
+            tbody![rows]
+        ],
+        view_search_pager_legacy(first, summaries.len(), search_results.total)
+    ]
+}
+
+fn view_search_pager(count: usize, pager: &FrontPageQuerySearchPageInfo) -> Node<Msg> {
+    let start = pager
+        .start_cursor
+        .as_ref()
+        .map(|i| i.parse().unwrap_or(0))
+        .unwrap_or(0);
+    nav![
+        C!["pagination"],
+        a![
+            C![
+                "pagination-previous",
+                "button",
+                //IF!(!pager.has_previous_page => "is-static"),
+            ],
+            IF!(!pager.has_previous_page => attrs!{ At::Disabled=>true }),
+            "<",
+            IF!(pager.has_previous_page => ev(Ev::Click, |_| Msg::PreviousPage)),
+        ],
+        a![
+            C![
+                "pagination-next",
+                "button",
+                //IF!(!pager.has_next_page => "is-static")
+            ],
+            IF!(!pager.has_next_page => attrs!{ At::Disabled=>true }),
+            ">",
+            IF!(pager.has_next_page => ev(Ev::Click, |_| Msg::NextPage))
+        ],
+        ul![
+            C!["pagination-list"],
+            li![format!(
+                "{} - {} of {}",
+                start,
+                count.min(start + SEARCH_RESULTS_PER_PAGE),
+                count
+            )],
+        ],
+    ]
+}
+
+fn view_search_pager_legacy(start: usize, count: usize, total: usize) -> Node<Msg> {
+    let is_first = start <= 0;
+    let is_last = (start + SEARCH_RESULTS_PER_PAGE) >= total;
+    nav![
+        C!["pagination"],
+        a![
+            C!["pagination-previous", "button",],
+            IF!(is_first => attrs!{ At::Disabled=>true }),
+            "<",
+            ev(Ev::Click, |_| Msg::PreviousPage)
+        ],
+        a![
+            C!["pagination-next", "button", IF!(is_last => "is-static")],
+            IF!(is_last => attrs!{ At::Disabled=>true }),
+            ">",
+            ev(Ev::Click, |_| Msg::NextPage)
+        ],
+        ul![
+            C!["pagination-list"],
+            li![format!("{} - {} of {}", start, start + count, total)],
+        ],
+    ]
+}
+
+trait Email {
+    fn name(&self) -> Option<&str>;
+    fn addr(&self) -> Option<&str>;
+}
+
+impl<T: Email> Email for &'_ T {
+    fn name(&self) -> Option<&str> {
+        return (*self).name();
+    }
+    fn addr(&self) -> Option<&str> {
+        return (*self).addr();
+    }
+}
+
+macro_rules! implement_email {
+    ( $($t:ty),+ ) => {$(
+        impl Email for $t {
+            fn name(&self) -> Option<&str> {
+                self.name.as_deref()
+            }
+            fn addr(&self) -> Option<&str> {
+                self.addr.as_deref()
+            }
+        }
+    )+};
+}
+
+implement_email!(
+    ShowThreadQueryThreadMessagesTo,
+    ShowThreadQueryThreadMessagesCc,
+    ShowThreadQueryThreadMessagesFrom
+);
+
+fn view_address(email: impl Email) -> Node<Msg> {
+    span![
+        C!["tag", "is-black"],
+        email.addr().as_ref().map(|a| attrs! {At::Title=>a}),
+        email
+            .name()
+            .as_ref()
+            .unwrap_or(&email.addr().unwrap_or("(UNKNOWN)"))
+    ]
+}
+
+fn view_addresses(addrs: &[impl Email]) -> Vec<Node<Msg>> {
+    addrs.into_iter().map(view_address).collect::<Vec<_>>()
+}
+
+fn view_thread(thread: &ShowThreadQueryThread) -> Node<Msg> {
+    // TODO(wathiede): show per-message subject if it changes significantly from top-level subject
+    set_title(&thread.subject);
+    let messages = thread.messages.iter().map(|msg| {
+        div![
+            C!["message"],
+            /* TODO(wathiede): collect all the tags and show them here. */
+            /* TODO(wathiede): collect all the attachments from all the subparts */
+            msg.from
+                .as_ref()
+                .map(|from| div![C!["header"], "From: ", view_address(&from)]),
+            msg.timestamp
+                .map(|ts| div![C!["header"], "Date: ", human_age(ts)]),
+            div![
+                C!["header"],
+                IF!(!msg.to.is_empty() => span!["To: ", view_addresses(&msg.to)]),
+                IF!(!msg.cc.is_empty() =>  span!["CC: ", view_addresses(&msg.cc)])
+            ],
+            div![
+                C!["body"],
+                match &msg.body {
+                    ShowThreadQueryThreadMessagesBody::UnhandledContentType(
+                        ShowThreadQueryThreadMessagesBodyOnUnhandledContentType { contents },
+                    ) => pre![C!["error"], contents],
+                    ShowThreadQueryThreadMessagesBody::PlainText(
+                        ShowThreadQueryThreadMessagesBodyOnPlainText {
+                            contents,
+                            content_tree,
+                        },
+                    ) => div![C!["view-part-text-plain"], contents, pre![content_tree]],
+                    ShowThreadQueryThreadMessagesBody::Html(
+                        ShowThreadQueryThreadMessagesBodyOnHtml {
+                            contents,
+                            content_tree,
+                        },
+                    ) => div![
+                        C!["view-part-text-html"],
+                        raw![contents],
+                        pre![content_tree]
+                    ],
+                }
+            ],
+        ]
+    });
+    div![
+        C!["thread"],
+        p![C!["is-size-4"], &thread.subject],
+        messages,
+        /* TODO(wathiede): plumb in orignal id
+        a![
+        attrs! {At::Href=>api::original(&thread_node.0.as_ref().expect("message missing").id)},
+        "Original"
+        ],
+        */
+    ]
+}
+
+fn view_thread_legacy(thread_set: &ThreadSet) -> Node<Msg> {
+    assert_eq!(thread_set.0.len(), 1);
+    let thread = &thread_set.0[0];
+    assert_eq!(thread.0.len(), 1);
+    let thread_node = &thread.0[0];
+    let subject = first_subject(&thread_node).unwrap_or("<No subject>".to_string());
+    set_title(&subject);
+    div![
+        C!["container"],
+        h1![C!["title"], subject],
+        view_message(&thread_node),
+        a![
+            attrs! {At::Href=>api::original(&thread_node.0.as_ref().expect("message missing").id)},
+            "Original"
+        ],
+    ]
+}
+
+fn view_header(query: &str, refresh_request: &RefreshingState) -> Node<Msg> {
+    let is_loading = refresh_request == &RefreshingState::Loading;
+    let is_error = if let RefreshingState::Error(err) = refresh_request {
+        error!("Failed to refresh: {err:?}");
+        true
+    } else {
+        false
+    };
+    let query = Url::decode_uri_component(query).unwrap_or("".to_string());
+    nav![
+        C!["navbar"],
+        attrs! {At::Role=>"navigation"},
+        div![
+            C!["navbar-start"],
+            a![
+                C!["navbar-item", "button", IF![is_error => "is-danger"]],
+                span![i![C![
+                    "fa-solid",
+                    "fa-arrow-rotate-right",
+                    "refresh",
+                    IF![is_loading => "loading"],
+                ]]],
+                ev(Ev::Click, |_| Msg::RefreshStart),
+            ],
+            a![
+                C!["navbar-item", "button"],
+                attrs! {
+                    At::Href => urls::search("is:unread", 0)
+                },
+                "Unread",
+            ],
+            a![
+                C!["navbar-item", "button"],
+                attrs! {
+                    At::Href => urls::search("", 0)
+                },
+                "All",
+            ],
+            input![
+                C!["navbar-item", "input"],
+                attrs! {
+                    At::Placeholder => "Search";
+                    At::AutoFocus => true.as_at_value();
+                    At::Value => query,
+                },
+                input_ev(Ev::Input, |q| if USE_GRAPHQL {
+                    Msg::UpdateQuery(q)
+                } else {
+                    Msg::SearchRequest {
+                        query: Url::encode_uri_component(if q.is_empty() {
+                            "*".to_string()
+                        } else {
+                            q
+                        }),
+                        page: 0,
+                        results_per_page: SEARCH_RESULTS_PER_PAGE,
+                    }
+                }),
+                // Send search on enter.
+                keyboard_ev(Ev::KeyUp, move |e| if e.key_code() == 0x0d {
+                    if USE_GRAPHQL {
+                        Msg::SearchQuery(query)
+                    } else {
+                        Msg::SearchRequest {
+                            query: Url::encode_uri_component(query),
+                            page: 0,
+                            results_per_page: SEARCH_RESULTS_PER_PAGE,
+                        }
+                    }
+                } else {
+                    Msg::Noop
+                }),
+            ]
+        ]
+    ]
+}
+
+fn view_footer(render_time_ms: u128) -> Node<Msg> {
+    footer![
+        C!["footer"],
+        div![
+            C!["content", "has-text-right", "is-size-7"],
+            format!("Render time {} ms", render_time_ms)
+        ]
+    ]
+}
+
+#[topo::nested]
+fn view_desktop(model: &Model) -> Node<Msg> {
+    // Do two queries, one without `unread` so it loads fast, then a second with unread.
+    let content = match &model.context {
+        Context::None => div![h1!["Loading"]],
+        Context::Thread(thread_set) => view_thread_legacy(thread_set),
+        Context::ThreadResult(thread) => view_thread(thread),
+        Context::Search(search_results) => view_search_results_legacy(&model.query, search_results),
+        Context::SearchResult {
+            query,
+            results,
+            count,
+            pager,
+        } => view_search_results(&query, results.as_slice(), *count, pager),
+    };
+    fn view_tag_li(display_name: &str, indent: usize, t: &Tag) -> Node<Msg> {
+        li![a![
+            attrs! {
+                At::Href => urls::search(&format!("tag:{}", t.name), 0)
+            },
+            (0..indent).map(|_| span![C!["tag-indent"], ""]),
+            i![
+                C!["tag-tag", "fa-solid", "fa-tag"],
+                style! {
+                    //"--fa-primary-color" => t.fg_color,
+                    St::Color => t.bg_color,
+                },
+            ],
+            display_name,
+            IF!(t.unread>0 => format!(" ({})", t.unread))
+        ]]
+    }
+    fn matches(a: &[&str], b: &[&str]) -> usize {
+        std::iter::zip(a.iter(), b.iter())
+            .take_while(|(a, b)| a == b)
+            .count()
+    }
+    fn view_tag_list<'a>(tags: impl Iterator<Item = &'a Tag>) -> Vec<Node<Msg>> {
+        let mut lis = Vec::new();
+        let mut last = Vec::new();
+        for t in tags {
+            let parts: Vec<_> = t.name.split('/').collect();
+            let mut n = matches(&last, &parts);
+            if t.name.starts_with("ZZCrap/Free") {
+                info!("n: {n}, parts: {parts:?} last: {last:?}");
+            }
+            if n <= parts.len() - 2 && parts.len() > 1 {
+                // Synthesize fake tags for proper indenting.
+                for i in n..parts.len() - 1 {
+                    let display_name = parts[n];
+                    lis.push(view_tag_li(
+                        &display_name,
+                        n,
+                        &Tag {
+                            name: parts[..i + 1].join("/"),
+                            bg_color: "#fff".to_string(),
+                            fg_color: "#000".to_string(),
+                            unread: 0,
+                        },
+                    ));
+                }
+                last = parts[..parts.len() - 1].to_vec();
+                n = parts.len() - 1;
+            }
+            let display_name = parts[n];
+            lis.push(view_tag_li(&display_name, n, t));
+            last = parts;
+        }
+        lis
+    }
+    let unread = model
+        .tags
+        .as_ref()
+        .map(|tags| tags.iter().filter(|t| t.unread > 0).collect())
+        .unwrap_or(Vec::new());
+    let tags_open = use_state(|| false);
+    let force_tags_open = unread.is_empty();
+    div![
+        C!["desktop-main-content"],
+        aside![
+            C!["tags-menu", "menu"],
+            IF!(!unread.is_empty() => p![C!["menu-label"], "Unread"]),
+            IF!(!unread.is_empty() => ul![C!["menu-list"], view_tag_list(unread.into_iter())]),
+            p![
+                C!["menu-label"],
+                IF!(!force_tags_open =>
+                i![C![
+                    "fa-solid",
+                    if tags_open.get() {
+                        "fa-angle-up"
+                    } else {
+                        "fa-angle-down"
+                    }
+                ]]),
+                " Tags",
+                ev(Ev::Click, move |_| {
+                    tags_open.set(!tags_open.get());
+                })
+            ],
+            ul![
+                C!["menu-list"],
+                IF!(force_tags_open||tags_open.get() => model.tags.as_ref().map(|tags| view_tag_list(tags.iter()))),
+            ]
+        ],
+        div![
+            view_header(&model.query, &model.refreshing_state),
+            content,
+            view_header(&model.query, &model.refreshing_state),
+        ]
+    ]
+}
+
+fn view_mobile(model: &Model) -> Node<Msg> {
+    let content = match &model.context {
+        Context::None => div![h1!["Loading"]],
+        Context::Thread(thread_set) => view_thread_legacy(thread_set),
+        Context::ThreadResult(thread) => view_thread(thread),
+        Context::Search(search_results) => {
+            view_mobile_search_results_legacy(&model.query, search_results)
+        }
+        Context::SearchResult {
+            query,
+            results,
+            count,
+            pager,
+        } => view_mobile_search_results(&query, results.as_slice(), *count, pager),
+    };
+    div![
+        view_header(&model.query, &model.refreshing_state),
+        content,
+        view_header(&model.query, &model.refreshing_state),
+    ]
+}
+
+// `view` describes what to display.
+pub fn view(model: &Model) -> Node<Msg> {
+    info!("refreshing {:?}", model.refreshing_state);
+    let is_mobile = seed::window()
+        .match_media("(max-width: 768px)")
+        .expect("failed media query")
+        .map(|mql| mql.matches())
+        .unwrap_or(false);
+
+    let start = Instant::now();
+    info!("view called");
+    div![
+        if is_mobile {
+            C!["mobile"]
+        } else {
+            C!["desktop"]
+        },
+        if is_mobile {
+            view_mobile(model)
+        } else {
+            view_desktop(model)
+        },
+        view_footer(start.elapsed().as_millis())
+    ]
+}