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The terms of this +License will continue to apply to the part which is the covered work, +but the work with which it is combined will remain governed by version +3 of the GNU General Public License. + + 14. Revised Versions of this License. + + The Free Software Foundation may publish revised and/or new versions of +the GNU Affero General Public License from time to time. Such new versions +will be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + + Each version is given a distinguishing version number. If the +Program specifies that a certain numbered version of the GNU Affero General +Public License "or any later version" applies to it, you have the +option of following the terms and conditions either of that numbered +version or of any later version published by the Free Software +Foundation. If the Program does not specify a version number of the +GNU Affero General Public License, you may choose any version ever published +by the Free Software Foundation. + + If the Program specifies that a proxy can decide which future +versions of the GNU Affero General Public License can be used, that proxy's +public statement of acceptance of a version permanently authorizes you +to choose that version for the Program. + + Later license versions may give you additional or different +permissions. However, no additional obligations are imposed on any +author or copyright holder as a result of your choosing to follow a +later version. + + 15. Disclaimer of Warranty. + + THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY +APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT +HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY +OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, +THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM +IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF +ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + + 16. Limitation of Liability. + + IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS +THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY +GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE +USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF +DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD +PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), +EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF +SUCH DAMAGES. + + 17. Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If your software can interact with users remotely through a computer +network, you should also make sure that it provides a way for users to +get its source. For example, if your program is a web application, its +interface could display a "Source" link that leads users to an archive +of the code. There are many ways you could offer source, and different +solutions will be better for different programs; see section 13 for the +specific requirements. + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU AGPL, see +. diff --git a/README.md b/README.md new file mode 100644 index 0000000..59db11e --- /dev/null +++ b/README.md @@ -0,0 +1,5 @@ +# en + +en is a tool to write non-linear, connected pieces of text and have their references mapped out as a graph of connected information. + +It works by ingesting a TOML file containing your node specification and serving it as a website that allows nodes to be browsed, searched and listed in relation to each other or as a shallow tree of nodes. diff --git a/src/formats.rs b/src/formats.rs new file mode 100644 index 0000000..99cf409 --- /dev/null +++ b/src/formats.rs @@ -0,0 +1,97 @@ +use std::collections::HashMap; + +use crate::types::*; + +pub enum Format { + Toml, + Json +} + +pub fn serialize_graph(out_format: Format, graph: &Graph) -> String { + + match out_format { + Format::Toml => { + match toml::to_string(graph) { + Ok(s) => s, + Err(e) => e.to_string(), + } + }, + Format::Json => { + match serde_json::to_string(graph) { + Ok(s) => s, + Err(e) => e.to_string(), + } + }, + } +} + +pub fn deserialize_graph(in_format: Format, serial: &String) -> Graph { + + match in_format { + Format::Toml => { match toml::from_str(&serial) { + Ok(g) => g, + Err(error) => Graph::new(Some(error.to_string())) + }}, + Format::Json => { match serde_json::from_str(&serial) { + Ok(g) => g, + Err(error) => Graph::new(Some(error.to_string())) + }} + } +} + +pub fn populate_graph() -> Graph { + let toml_source = match std::fs::read_to_string("./static/graph.toml") { + Ok(s) => s, + Err(e) => format!("Error: {e}"), + }; + let graph = deserialize_graph(Format::Toml, &toml_source); + let mut new_nodes: HashMap = HashMap::new(); + let mut incoming: HashMap> = HashMap::new(); + + // If an edge has no "from" ID, default to its node's ID + for (key, node) in graph.nodes.iter() { + + let mut new_node = node.clone(); + let connections = node.connections.clone().unwrap_or_default(); + + for (i, edge) in connections.iter().enumerate() { + if edge.from == "" { + let new_edge = Edge { + from: key.to_string(), + ..edge.clone() + }; + let mut vec = connections.clone(); + vec[i] = new_edge; + new_node = Node { + connections: Some(vec), + ..node.clone() + }; + } + } + + new_nodes.insert(key.to_string(), new_node.clone()); + } + + // Construct a HashMap with incoming connections (reversed edges) + for node in new_nodes.clone().into_values() { + + let empty_vec: Vec = vec![]; + for edge in node.connections.clone().unwrap_or_default().iter() { + + let vec = incoming.get(&edge.to.clone()).unwrap_or(&empty_vec); + if vec.contains(edge) { + vec.clone().extend_from_slice(&[edge.clone()]); + incoming.insert(edge.to.clone(), vec.clone()); + } else { + incoming.insert(edge.to.clone(), vec![edge.clone()]); + } + } + } + + Graph { + nodes: new_nodes, + incoming: incoming, + ..graph + } + +} diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..64203a9 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,203 @@ +use axum::{ + extract::Path, + http::{header, StatusCode}, + response::{ Html, IntoResponse, Redirect }, + routing::get, + Form, + Router, +}; + +mod types; +mod formats; + +use formats::*; +use types::*; + +#[tokio::main] +async fn main() { + + let app = Router::new() + .route("/", get(index).post(query)) + .route("/graph/toml", get(toml_graph)) + .route("/graph/json", get(json_graph)) + .route("/static/style.css", get(stylesheet)) + .route("/node/{node_id}", get(node_view).post(node_view)) + .route("/tree", get(tree)) + .fallback(not_found) + ; + + let listener = tokio::net::TcpListener::bind("0.0.0.0:3000").await.unwrap(); + axum::serve(listener, app).await.unwrap(); +} + +fn make_body( + name: &str, + context: tera::Context, + error_code: u16, + error_message: &str, +) -> String { + + let tera = tera::Tera::new( + concat!(env!("CARGO_MANIFEST_DIR"), "/templates/**/*"), + ).unwrap_or(tera::Tera::default()); + + let mut error_context = tera::Context::new(); + let error = StatusCode::from_u16(error_code) + .unwrap_or(StatusCode::NOT_IMPLEMENTED); + error_context.insert("title", &error.to_string()); + error_context.insert( + "message", + &format!("Error while filling template {}: {}", name, error_message), + ); + + tera.render(name, &context) + .unwrap_or(tera.render("error.html", &error_context) + .unwrap_or(error_message.to_string())) +} + + +fn template_handler( + name: &str, + context: tera::Context, + error_code: u16, + error_message: &str, +) -> Html { + let body = make_body(name, context, error_code, error_message); + Html(body) +} + +async fn node_view(Path(id): Path) -> impl IntoResponse { + + let mut context = tera::Context::new(); + + let graph = populate_graph(); + let nodes = graph.nodes; + let empty_node = Node::new( + Some(format!("Could not find node with ID {}.", id)), + ); + + let node: &Node = nodes.get(&id).unwrap_or(&empty_node); + + context.insert("id", &node.id); + context.insert("title", &node.title); + context.insert("body", &node.body); + context.insert("connections", &node.connections.clone()); + context.insert("incoming", &graph.incoming.get(&node.id)); + + template_handler( + "node.html", + context, + 500, + &format!( + r#"Failed to generate page for node {} (ID {}) with {} outgoing, + {} incoming connections and body "{}""#, + node.title, + node.id, + node.connections.iter().len(), + graph.incoming.get(&node.id).iter().len(), + node.body, + ), + ) +} + +async fn index() -> Html { + + let mut context = tera::Context::new(); + let graph = populate_graph(); + let root_node = graph.get_root(); + let nodes: Vec = graph.nodes.into_values().collect(); + + context.insert("nodes", &nodes); + context.insert("root_node", &root_node); + + template_handler("index.html", context, 500, "Failed to render template.") +} + +async fn tree() -> Html { + + let mut context = tera::Context::new(); + let graph = populate_graph(); + let root_node = graph.get_root(); + let nodes: Vec = graph.nodes.into_values().collect(); + + context.insert("nodes", &nodes); + context.insert("root_node", &root_node); + + template_handler("tree.html", context, 500, "Failed to render template") +} + +#[derive(serde::Deserialize)] +struct Query { node: String } + +async fn query(Form(query): Form) -> Redirect { + Redirect::permanent(format!("/node/{}", query.node).as_str()) +} + +async fn json_graph() -> impl IntoResponse { + let graph = populate_graph(); + let body = serialize_graph(Format::Json, &graph); + + ([(header::CONTENT_TYPE, "application/json")], body) +} + +async fn toml_graph() -> impl IntoResponse { + let graph = populate_graph(); + let body = serialize_graph(Format::Toml, &graph); + + ([(header::CONTENT_TYPE, "text/plain")], body) +} + +async fn stylesheet() -> impl IntoResponse { + let body = match std::fs::read_to_string("./static/style.css") { + Ok(s) => s, + Err(e) => format!("Error: {e}"), + }; + + ([(header::CONTENT_TYPE, "text/css")], body) +} + +fn make_error_body( + code: Option, + message: Option<&str>, +) -> String { + + let mut context = tera::Context::new(); + + let code = code.unwrap_or(501); + let message = &message.unwrap_or("Unknown error"); + + context.insert("title", &StatusCode::from_u16(code) + .unwrap_or(StatusCode::INTERNAL_SERVER_ERROR).to_string()); + context.insert("message", message); + context.insert("status_code", &code.to_string()); + + make_body("error.html", context, 500, &format!( + "Failed to render template for Error {}: {}", + code, + message, + )) +} + +fn make_error_response( + code: Option, + message: Option<&str>, +) -> impl IntoResponse { + + let code = code.unwrap_or(501); + let message = &message.unwrap_or("Unknown error"); + + let body = make_error_body(Some(code), Some(message)); + + ( + StatusCode::from_u16(code).unwrap_or(StatusCode::INTERNAL_SERVER_ERROR), + [(header::CONTENT_TYPE, "text/html")], + body.to_string(), + ) +} + +async fn not_found() -> impl IntoResponse { + make_error_response( + Some(404), + Some("The page you tried to access could not be found."), + ) +} diff --git a/src/types.rs b/src/types.rs new file mode 100644 index 0000000..18b8d53 --- /dev/null +++ b/src/types.rs @@ -0,0 +1,62 @@ +use serde::{Serialize, Deserialize}; +use std::collections::HashMap; + +#[derive(Serialize, Deserialize, Clone, Default)] +pub struct Graph { + pub messages: Vec, + pub root_node: String, + pub nodes: HashMap, + #[serde(skip)] + pub incoming: HashMap>, +} + +#[derive(Serialize, Clone, Default, PartialEq, Deserialize)] +pub struct Edge { + #[serde(default)] + pub anchor: String, + #[serde(default)] + pub from: String, + pub to: String, +} + +#[derive(Serialize, Deserialize, Clone, Default)] +pub struct Node { + pub title: String, + pub id: String, + pub body: String, + #[serde(skip_serializing_if = "Option::is_none")] + pub connections: Option>, +} + +impl Graph { + pub fn new(message: Option) -> Graph { + Self { + nodes: HashMap::new(), + incoming: HashMap::new(), + root_node: "".to_string(), + messages: vec![message + .unwrap_or("This graph is empty or in error".to_string())], + } + } + + pub fn get_root(&self) -> Option { + match self.nodes.get(&self.root_node) { + Some(n) => Some(n.clone()), + None => None, + } + } +} + +impl Node { + pub fn new(message: Option) -> Node { + Self { + title: "Empty Node".to_string(), + id: "EmptyNode".to_string(), + body: match message { + Some(s) => s, + None => "Node is empty, missing or wasn't found.".to_string() + }, + connections: None, + } + } +} diff --git a/static/graph.toml b/static/graph.toml new file mode 100644 index 0000000..6160d33 --- /dev/null +++ b/static/graph.toml @@ -0,0 +1,72 @@ +messages = [ "Test Graph over Fetch from Actix" ] +root_node = "Interface" + +[nodes.SomeNode] +title = "Some Node" +id = "SomeNode" +body = "This describes some node in relation to some other node." + +[[nodes.SomeNode.connections]] +anchor = "some other node" +to = "SomeOtherNode" + +[nodes.SomeOtherNode] +title = "Some Other Node" +id = "SomeOtherNode" +body = "This describes some other node in relation to the first node." + +[[nodes.SomeOtherNode.connections]] +anchor = "the first node" +to = "SomeNode" + +[nodes.Interface] +title = "Interface" +id = "Interface" +body = """ +An interface is a point of contact between the inside and the outside of something. Contrast with intraface. +""" + +[[nodes.Interface.connections]] +to = "Intraface" + +[nodes.Intraface] +title = "Intraface" +id = "Intraface" +body = """ +The intraface is the reflexive process of communicating, creating, thinking, that does not or cannot get shared with others. Contrast with interface. +""" + +[[nodes.Intraface.connections]] +to = "Interface" + +[[nodes.Intraface.connections]] +to = "Thinking" + +[nodes.Thinking] +title = "Thinking" +id = "Thinking" +body = """ +Thinking is a process by which some beings create and manipulate mental constructs. +""" + +[nodes.Paradigm] +title = "Paradigm" +id = "Paradigm" +body = """ +A paradigm is a cohesive set of beliefs, methods and principles that serve both as justification for a given position and as guidance for how to pursue its praxis. +""" + +[[nodes.Paradigm.connections]] +to = "Belief" + +[[nodes.Paradigm.connections]] +to = "Method" + +[[nodes.Paradigm.connections]] +to = "Principle" + +[[nodes.Paradigm.connections]] +to = "Position" + +[[nodes.Paradigm.connections]] +to = "Praxis" diff --git a/static/style.css b/static/style.css new file mode 100644 index 0000000..55babcf --- /dev/null +++ b/static/style.css @@ -0,0 +1,26 @@ +* { + line-height: 1.6em; +} + +html { + height: 100%; +} + +body { + height: 100%; + display: grid; + grid-template-rows: auto 1fr auto; +} + +footer div { + margin: 20px 0; + text-align: center; + font-size: 0.8em; +} + +@media (prefers-color-scheme: dark) { + * { + background-color: #222222; + color: #f1e9e5; + } +} diff --git a/templates/base.html b/templates/base.html new file mode 100644 index 0000000..51f0685 --- /dev/null +++ b/templates/base.html @@ -0,0 +1,44 @@ + + + + {% block title %}{% endblock title %} • en + + + + {% block head %} + {% endblock head %} + + + +
+ {% block body %} + {% endblock body %} +
+
+
+
+ made by jutty + • + acknowledgments + • + source code +
+ built + + • + +
+
+ + diff --git a/templates/empty.html b/templates/empty.html new file mode 100644 index 0000000..3bcea75 --- /dev/null +++ b/templates/empty.html @@ -0,0 +1,2 @@ +

There are no nodes. The graph is either empty or failed to parse.

+

Check the raw endpoints for possible parsing errors.

diff --git a/templates/error.html b/templates/error.html new file mode 100644 index 0000000..8a2ec3d --- /dev/null +++ b/templates/error.html @@ -0,0 +1,14 @@ +{% extends "base.html" %} + +{%- block body %} +

+ {{ title | default(value="Unknown error") }} +

+ {{ message | default(value="This error has not been described in detail.") }} +
+
+

It seems you have fallen out of the circle.

+

Maybe you'd like to climb back on the tree? +

+

+{%- endblock body %} diff --git a/templates/index.html b/templates/index.html new file mode 100644 index 0000000..76b32c3 --- /dev/null +++ b/templates/index.html @@ -0,0 +1,38 @@ +{% extends "base.html" %} + +{% block title %}Index{% endblock title %} + +{%- block body %} +

en

+

+ A non-linear writing instrument. + {% if nodes %} +

+ + + +
+
+

Nodes

+ + {% else %} +
+ {% include "empty.html" %} + {% endif %} +{%- endblock body %} diff --git a/templates/node.html b/templates/node.html new file mode 100644 index 0000000..fca4fbd --- /dev/null +++ b/templates/node.html @@ -0,0 +1,44 @@ +{% extends "base.html" %} + +{% block title %}{{ title }}{% endblock title %} + +{%- block body %} +
+

{{ title }}

+ ID: {{ id }} +

{{ body }}

+
+ {% if connections or incoming %} + + {% else %} + Node has no connections. + {% endif %} +{%- endblock body %} diff --git a/templates/tree.html b/templates/tree.html new file mode 100644 index 0000000..0f7ca35 --- /dev/null +++ b/templates/tree.html @@ -0,0 +1,76 @@ +{% extends "base.html" %} + +{% block title %}Tree{% endblock title %} + +{%- block body %} + {% if nodes or root_node %} +

Tree

+

Total nodes: {{ nodes | length }}

+ {% if root_node %} +

Root node

+ +
    +
  • + {{root_node.title}} +
      +
    • Body: +
        +
      • +
        + + {{root_node.body | truncate(length=120)}} + + {{root_node.body}} +
        +
        • +
      + {% if root_node.connections %} +
    • Connections +
        + {% for connection in root_node.connections %} +
      • {{connection.to}}
        • + {% endfor %} +
      +
      • + {% endif %} +
    +
    • +
+ + {% endif %} + {% if nodes %} +

All nodes

+
    + {% for node in nodes %} +
  • + {{node.title}} +
      +
    • Body: +
        +
      • +
        + + {{node.body | truncate(length=30)}} + + {{node.body}} +
        +
        • +
      + {% if node.connections %} +
    • Connections + +
      • + {% endif %} +
    +
    • + {% endfor %} + {% endif %} +
+ {% else %} +

There are no nodes. The graph is either empty or failed to parse.

+ {% endif %} +{%- endblock body %}