add: polls backend

TODO: polls frontend

crates/app/src/assets.rs

@@ -22,7 +22,6 @@ use tetratto_core::{
 use tetratto_l10n::LangFile;
 use tetratto_shared::hash::salt;
 use tokio::sync::RwLock;
-
 use crate::{create_dir_if_not_exists, write_if_track, write_template};
 
 // images

crates/app/src/public/html/components.lisp

@@ -111,7 +111,7 @@
     ("style" "display: contents")
     (text "{{ self::post(post=post, owner=owner, secondary=secondary, community=community, show_community=show_community, can_manage_post=can_manage_post, repost=repost, expect_repost=true) }}"))
 
-(text "{%- endmacro %} {% macro post(post, owner, question=false, secondary=false, community=false, show_community=true, can_manage_post=false, repost=false, expect_repost=false) -%} {% if community and show_community and community.id != config.town_square or question %}")
+(text "{%- endmacro %} {% macro post(post, owner, question=false, secondary=false, community=false, show_community=true, can_manage_post=false, repost=false, expect_repost=false, poll=false) -%} {% if community and show_community and community.id != config.town_square or question %}")
 (div
     ("class" "card-nest")
     (text "{% if question -%} {{ self::question(question=question[0], owner=question[1], profile=owner) }} {% else %}")

crates/app/src/public/html/profile/settings.lisp

@@ -522,9 +522,9 @@
                             ("class" "card flex flex-col gap-2")
                             (text "{% if is_supporter -%}")
                             (p
-                                (text "You")
+                                (text "You ")
                                 (b
-                                    (text "are"))
+                                    (text "are "))
                                 (text "a supporter! Thank you for all
                                 that you do. You can manage your billing
                                 information below.")
@@ -539,9 +539,9 @@
                                 (text "Manage billing"))
                             (text "{% else %}")
                             (p
-                                (text "You're")
+                                (text "You're ")
                                 (b
-                                    (text "not"))
+                                    (text "not "))
                                 (text "currently a supporter! No
                                 pressure, but it helps us do some pretty cool
                                 things! As a supporter, you'll get:"))

crates/app/src/public/html/timelines/all.lisp

@@ -30,6 +30,6 @@
     (text "{%- endif %}")
     (div
         ("class" "card w-full flex flex-col gap-2")
-        (text "{% for post in list %} {% if post[2].read_access == \"Everybody\" -%} {% if post[0].context.repost and post[0].context.repost.reposting -%} {{ components::repost(repost=post[3], post=post[0], owner=post[1], secondary=true, community=post[2], show_community=true) }} {% else %} {{ components::post(post=post[0], owner=post[1], question=post[4], secondary=true, community=post[2]) }} {%- endif %} {%- endif %} {% endfor %}  {{ components::pagination(page=page, items=list|length) }}")))
+        (text "{% for post in list %} {% if post[2].read_access == \"Everybody\" -%} {% if post[0].context.repost and post[0].context.repost.reposting -%} {{ components::repost(repost=post[3], post=post[0], owner=post[1], secondary=true, community=post[2], show_community=true) }} {% else %} {{ components::post(post=post[0], owner=post[1], question=post[4], secondary=true, community=post[2], poll=post[3]) }} {%- endif %} {%- endif %} {% endfor %}  {{ components::pagination(page=page, items=list|length) }}")))
 
 (text "{% endblock %}")

crates/app/src/routes/api/v1/communities/posts.rs

@@ -7,7 +7,7 @@ use axum::{
 use axum_extra::extract::CookieJar;
 use tetratto_core::model::{
     addr::RemoteAddr,
-    communities::Post,
+    communities::{Poll, PollVote, Post},
     permissions::FinePermission,
     uploads::{MediaType, MediaUpload},
     ApiReturn, Error,
@@ -15,7 +15,7 @@ use tetratto_core::model::{
 use crate::{
     get_user_from_token,
     image::{save_webp_buffer, JsonMultipart},
-    routes::api::v1::{CreatePost, CreateRepost, UpdatePostContent, UpdatePostContext},
+    routes::api::v1::{CreatePost, CreateRepost, UpdatePostContent, UpdatePostContext, VoteInPoll},
     State,
 };
 
@@ -66,6 +66,21 @@ pub async fn create_request(
         return Json(Error::NotAllowed.into());
     }
 
+    // create poll
+    let poll_id = if let Some(p) = req.poll {
+        match data
+            .create_poll(Poll::new(
+                user.id, 86400000, p.option_a, p.option_b, p.option_c, p.option_d,
+            ))
+            .await
+        {
+            Ok(p) => p,
+            Err(e) => return Json(e.into()),
+        }
+    } else {
+        0
+    };
+
     // ...
     let mut props = Post::new(
         req.content,
@@ -82,6 +97,7 @@ pub async fn create_request(
             None
         },
         user.id,
+        poll_id,
     );
 
     if !req.answering.is_empty() {
@@ -308,3 +324,39 @@ pub async fn update_context_request(
         Err(e) => Json(e.into()),
     }
 }
+
+pub async fn vote_request(
+    jar: CookieJar,
+    Extension(data): Extension<State>,
+    Path(id): Path<usize>,
+    Json(req): Json<VoteInPoll>,
+) -> impl IntoResponse {
+    let data = &(data.read().await).0;
+    let user = match get_user_from_token!(jar, data) {
+        Some(ua) => ua,
+        None => return Json(Error::NotAllowed.into()),
+    };
+
+    let post = match data.get_post_by_id(id).await {
+        Ok(p) => p,
+        Err(e) => return Json(e.into()),
+    };
+
+    let poll = match data.get_poll_by_id(post.poll_id).await {
+        Ok(p) => p,
+        Err(e) => return Json(e.into()),
+    };
+
+    // ...
+    match data
+        .create_pollvote(PollVote::new(user.id, poll.id, req.option))
+        .await
+    {
+        Ok(_) => Json(ApiReturn {
+            ok: true,
+            message: "Vote cast".to_string(),
+            payload: (),
+        }),
+        Err(e) => Json(e.into()),
+    }
+}

crates/app/src/routes/api/v1/mod.rs

@@ -19,7 +19,7 @@ use serde::Deserialize;
 use tetratto_core::model::{
     communities::{
         CommunityContext, CommunityJoinAccess, CommunityReadAccess, CommunityWriteAccess,
-        PostContext,
+        PollOption, PostContext,
     },
     communities_permissions::CommunityPermission,
     permissions::FinePermission,
@@ -113,6 +113,10 @@ pub fn routes() -> Router {
             "/posts/{id}/context",
             post(communities::posts::update_context_request),
         )
+        .route(
+            "/posts/{id}/poll_vote",
+            post(communities::posts::vote_request),
+        )
         // drafts
         .route("/drafts", post(communities::drafts::create_request))
         .route("/drafts/{id}", delete(communities::drafts::delete_request))
@@ -419,6 +423,14 @@ pub struct UpdateCommunityJoinAccess {
     pub access: CommunityJoinAccess,
 }
 
+#[derive(Deserialize)]
+pub struct CreatePostPoll {
+    pub option_a: String,
+    pub option_b: String,
+    pub option_c: String,
+    pub option_d: String,
+}
+
 #[derive(Deserialize)]
 pub struct CreatePost {
     pub content: String,
@@ -427,6 +439,8 @@ pub struct CreatePost {
     pub replying_to: Option<String>,
     #[serde(default)]
     pub answering: String,
+    #[serde(default)]
+    pub poll: Option<CreatePostPoll>,
 }
 
 #[derive(Deserialize)]
@@ -597,3 +611,8 @@ pub struct UpdateEmojiName {
 pub struct CreatePostDraft {
     pub content: String,
 }
+
+#[derive(Deserialize)]
+pub struct VoteInPoll {
+    pub option: PollOption,
+}

crates/core/src/database/auth.rs

@@ -358,6 +358,24 @@ impl DataManager {
             return Err(Error::DatabaseError(e.to_string()));
         }
 
+        // delete polls
+        let res = execute!(&conn, "DELETE FROM polls WHERE owner = $1", &[&(id as i64)]);
+
+        if let Err(e) = res {
+            return Err(Error::DatabaseError(e.to_string()));
+        }
+
+        // delete poll votes
+        let res = execute!(
+            &conn,
+            "DELETE FROM pollvotes WHERE owner = $1",
+            &[&(id as i64)]
+        );
+
+        if let Err(e) = res {
+            return Err(Error::DatabaseError(e.to_string()));
+        }
+
         // delete user follows... individually since it requires updating user counts
         for follow in self.get_userfollows_by_receiver_all(id).await? {
             self.delete_userfollow(follow.id, &user, true).await?;

crates/core/src/database/common.rs

@@ -36,6 +36,8 @@ impl DataManager {
         execute!(&conn, common::CREATE_TABLE_EMOJIS).unwrap();
         execute!(&conn, common::CREATE_TABLE_STACKS).unwrap();
         execute!(&conn, common::CREATE_TABLE_DRAFTS).unwrap();
+        execute!(&conn, common::CREATE_TABLE_POLLS).unwrap();
+        execute!(&conn, common::CREATE_TABLE_POLLVOTES).unwrap();
 
         self.2
             .set("atto.active_connections:users".to_string(), "0".to_string())

crates/core/src/database/drivers/common.rs

@@ -19,3 +19,5 @@ pub const CREATE_TABLE_UPLOADS: &str = include_str!("./sql/create_uploads.sql");
 pub const CREATE_TABLE_EMOJIS: &str = include_str!("./sql/create_emojis.sql");
 pub const CREATE_TABLE_STACKS: &str = include_str!("./sql/create_stacks.sql");
 pub const CREATE_TABLE_DRAFTS: &str = include_str!("./sql/create_drafts.sql");
+pub const CREATE_TABLE_POLLS: &str = include_str!("./sql/create_polls.sql");
+pub const CREATE_TABLE_POLLVOTES: &str = include_str!("./sql/create_pollvotes.sql");

crates/core/src/database/drivers/sql/create_polls.sql

@@ -0,0 +1,14 @@
+CREATE TABLE IF NOT EXISTS polls (
+    id BIGINT NOT NULL PRIMARY KEY,
+    owner BIGINT NOT NULL,
+    created BIGINT NOT NULL,
+    expires INT NOT NULL DEFAULT 86400000, -- expires in a day by default
+    option_a TEXT NOT NULL,
+    option_b TEXT NOT NULL,
+    option_c TEXT NOT NULL,
+    option_d TEXT NOT NULL,
+    votes_a INT NOT NULL DEFAULT 0,
+    votes_b INT NOT NULL DEFAULT 0,
+    votes_c INT NOT NULL DEFAULT 0,
+    votes_d INT NOT NULL DEFAULT 0
+)

crates/core/src/database/drivers/sql/create_pollvotes.sql

@@ -0,0 +1,8 @@
+CREATE TABLE IF NOT EXISTS pollvotes (
+    id BIGINT NOT NULL,
+    owner BIGINT NOT NULL,
+    created BIGINT NOT NULL,
+    poll_id BIGINT NOT NULL,
+    vote INT NOT NULL,
+    PRIMARY KEY (owner, poll_id)
+)

crates/core/src/database/drivers/sql/create_posts.sql

@@ -14,5 +14,6 @@ CREATE TABLE IF NOT EXISTS posts (
     -- ...
     uploads TEXT NOT NULL,
     is_deleted INT NOT NULL,
-    tsvector_content tsvector GENERATED ALWAYS AS (to_tsvector ('english', coalesce(content, ''))) STORED
+    tsvector_content tsvector GENERATED ALWAYS AS (to_tsvector ('english', coalesce(content, ''))) STORED,
+    poll_id BIGINT NOT NULL
 )

crates/core/src/database/mod.rs

@@ -10,6 +10,8 @@ mod ipbans;
 mod ipblocks;
 mod memberships;
 mod notifications;
+mod polls;
+mod pollvotes;
 mod posts;
 mod questions;
 mod reactions;

crates/core/src/database/polls.rs

@@ -0,0 +1,141 @@
+use super::*;
+use crate::cache::Cache;
+use crate::model::communities::Poll;
+use crate::model::moderation::AuditLogEntry;
+use crate::model::{Error, Result, auth::User, permissions::FinePermission};
+use crate::{auto_method, execute, get, query_row, params};
+
+#[cfg(feature = "sqlite")]
+use rusqlite::Row;
+
+#[cfg(feature = "postgres")]
+use tokio_postgres::Row;
+
+impl DataManager {
+    /// Get a [`Poll`] from an SQL row.
+    pub(crate) fn get_poll_from_row(
+        #[cfg(feature = "sqlite")] x: &Row<'_>,
+        #[cfg(feature = "postgres")] x: &Row,
+    ) -> Poll {
+        Poll {
+            id: get!(x->0(i64)) as usize,
+            owner: get!(x->1(i64)) as usize,
+            created: get!(x->2(i64)) as usize,
+            expires: get!(x->3(i64)) as usize,
+            option_a: get!(x->4(String)),
+            option_b: get!(x->5(String)),
+            option_c: get!(x->6(String)),
+            option_d: get!(x->7(String)),
+            votes_a: get!(x->8(i32)) as usize,
+            votes_b: get!(x->9(i32)) as usize,
+            votes_c: get!(x->10(i32)) as usize,
+            votes_d: get!(x->11(i32)) as usize,
+        }
+    }
+
+    auto_method!(get_poll_by_id()@get_poll_from_row -> "SELECT * FROM polls WHERE id = $1" --name="poll" --returns=Poll --cache-key-tmpl="atto.poll:{}");
+
+    /// Create a new poll in the database.
+    ///
+    /// # Arguments
+    /// * `data` - a mock [`Poll`] object to insert
+    pub async fn create_poll(&self, data: Poll) -> Result<usize> {
+        // check values
+        if data.option_a.len() < 2 {
+            return Err(Error::DataTooShort("option A".to_string()));
+        } else if data.option_a.len() > 128 {
+            return Err(Error::DataTooLong("option A".to_string()));
+        }
+
+        if data.option_b.len() < 2 {
+            return Err(Error::DataTooShort("option B".to_string()));
+        } else if data.option_b.len() > 128 {
+            return Err(Error::DataTooLong("option B".to_string()));
+        }
+
+        if data.option_c.len() > 128 {
+            return Err(Error::DataTooLong("option C".to_string()));
+        }
+
+        if data.option_d.len() > 128 {
+            return Err(Error::DataTooLong("option D".to_string()));
+        }
+
+        // ...
+        let conn = match self.connect().await {
+            Ok(c) => c,
+            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
+        };
+
+        let res = execute!(
+            &conn,
+            "INSERT INTO polls VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12)",
+            params![
+                &(data.id as i64),
+                &(data.owner as i64),
+                &(data.created as i64),
+                &(data.expires as i64),
+                &data.option_a,
+                &data.option_b,
+                &data.option_c,
+                &data.option_d,
+                &(data.votes_a as i64),
+                &(data.votes_b as i64),
+                &(data.votes_c as i64),
+                &(data.votes_d as i64),
+            ]
+        );
+
+        if let Err(e) = res {
+            return Err(Error::DatabaseError(e.to_string()));
+        }
+
+        Ok(data.id)
+    }
+
+    pub async fn delete_poll(&self, id: usize, user: User) -> Result<()> {
+        let y = self.get_poll_by_id(id).await?;
+
+        if user.id != y.owner {
+            if !user.permissions.check(FinePermission::MANAGE_POSTS) {
+                return Err(Error::NotAllowed);
+            } else {
+                self.create_audit_log_entry(AuditLogEntry::new(
+                    user.id,
+                    format!("invoked `delete_poll` with x value `{id}`"),
+                ))
+                .await?
+            }
+        }
+        let conn = match self.connect().await {
+            Ok(c) => c,
+            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
+        };
+
+        let res = execute!(&conn, "DELETE FROM polls WHERE id = $1", &[&(id as i64)]);
+
+        if let Err(e) = res {
+            return Err(Error::DatabaseError(e.to_string()));
+        }
+
+        self.2.remove(format!("atto.poll:{}", id)).await;
+
+        Ok(())
+    }
+
+    pub async fn cache_clear_poll(&self, poll: &Poll) {
+        self.2.remove(format!("atto.poll:{}", poll.id)).await;
+    }
+
+    auto_method!(incr_votes_a_count()@get_poll_by_id -> "UPDATE users SET votes_a = votes_a + 1 WHERE id = $1" --cache-key-tmpl=cache_clear_poll --incr);
+    auto_method!(decr_votes_a_count()@get_poll_by_id -> "UPDATE users SET votes_a = votes_a - 1 WHERE id = $1" --cache-key-tmpl=cache_clear_poll --decr=votes_a);
+
+    auto_method!(incr_votes_b_count()@get_poll_by_id -> "UPDATE users SET votes_b = votes_b + 1 WHERE id = $1" --cache-key-tmpl=cache_clear_poll --incr);
+    auto_method!(decr_votes_b_count()@get_poll_by_id -> "UPDATE users SET votes_b = votes_b - 1 WHERE id = $1" --cache-key-tmpl=cache_clear_poll --decr=votes_b);
+
+    auto_method!(incr_votes_c_count()@get_poll_by_id -> "UPDATE users SET votes_a = votes_d + 1 WHERE id = $1" --cache-key-tmpl=cache_clear_poll --incr);
+    auto_method!(decr_votes_c_count()@get_poll_by_id -> "UPDATE users SET votes_a = votes_d - 1 WHERE id = $1" --cache-key-tmpl=cache_clear_poll --decr=votes_c);
+
+    auto_method!(incr_votes_d_count()@get_poll_by_id -> "UPDATE users SET votes_a = votes_d + 1 WHERE id = $1" --cache-key-tmpl=cache_clear_poll --incr);
+    auto_method!(decr_votes_d_count()@get_poll_by_id -> "UPDATE users SET votes_a = votes_d - 1 WHERE id = $1" --cache-key-tmpl=cache_clear_poll --decr=votes_d);
+}

crates/core/src/database/pollvotes.rs

@@ -0,0 +1,149 @@
+use super::*;
+use crate::cache::Cache;
+use crate::model::communities::PollVote;
+use crate::model::moderation::AuditLogEntry;
+use crate::model::{Error, Result, auth::User, permissions::FinePermission};
+use crate::{auto_method, execute, get, query_row, params};
+
+#[cfg(feature = "sqlite")]
+use rusqlite::Row;
+
+use tetratto_shared::unix_epoch_timestamp;
+#[cfg(feature = "postgres")]
+use tokio_postgres::Row;
+
+impl DataManager {
+    /// Get a [`PollVote`] from an SQL row.
+    pub(crate) fn get_pollvote_from_row(
+        #[cfg(feature = "sqlite")] x: &Row<'_>,
+        #[cfg(feature = "postgres")] x: &Row,
+    ) -> PollVote {
+        PollVote {
+            id: get!(x->0(i64)) as usize,
+            owner: get!(x->1(i64)) as usize,
+            created: get!(x->2(i64)) as usize,
+            poll_id: get!(x->3(i64)) as usize,
+            vote: (get!(x->4(i32)) as u8).into(),
+        }
+    }
+
+    auto_method!(get_pollvote_by_id()@get_pollvote_from_row -> "SELECT * FROM pollvotes WHERE id = $1" --name="poll vote" --returns=PollVote --cache-key-tmpl="atto.pollvote:{}");
+
+    pub async fn get_pollvote_by_owner_poll(&self, id: usize, poll_id: usize) -> Result<PollVote> {
+        if let Some(cached) = self
+            .2
+            .get(format!("atto.pollvote:{}:{}", id, poll_id))
+            .await
+        {
+            return Ok(serde_json::from_str(&cached).unwrap());
+        }
+
+        let conn = match self.connect().await {
+            Ok(c) => c,
+            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
+        };
+
+        let res = query_row!(
+            &conn,
+            "SELECT * FROM pollvotes WHERE id = $1 AND poll_id = $2",
+            &[&(id as i64), &(poll_id as i64)],
+            |x| { Ok(Self::get_pollvote_from_row(x)) }
+        );
+
+        if res.is_err() {
+            return Err(Error::GeneralNotFound("poll vote".to_string()));
+        }
+
+        let x = res.unwrap();
+        self.2
+            .set(
+                format!("atto.pollvote:{}:{}", id, poll_id),
+                serde_json::to_string(&x).unwrap(),
+            )
+            .await;
+
+        Ok(x)
+    }
+
+    /// Create a new poll vote in the database.
+    ///
+    /// # Arguments
+    /// * `data` - a mock [`PollVote`] object to insert
+    pub async fn create_pollvote(&self, data: PollVote) -> Result<usize> {
+        // get poll and check permission
+        let poll = self.get_poll_by_id(data.poll_id).await?;
+
+        let now = unix_epoch_timestamp() as usize;
+        let diff = now - poll.created;
+
+        if diff > poll.expires {
+            return Err(Error::MiscError("Poll is closed".to_string()));
+        };
+
+        // ...
+        let conn = match self.connect().await {
+            Ok(c) => c,
+            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
+        };
+
+        let vote_u8: u8 = data.vote.into();
+        let res = execute!(
+            &conn,
+            "INSERT INTO pollvotes VALUES ($1, $2, $3, $4, $5)",
+            params![
+                &(data.id as i64),
+                &(data.owner as i64),
+                &(data.created as i64),
+                &(data.poll_id as i64),
+                &(vote_u8 as i64),
+            ]
+        );
+
+        if let Err(e) = res {
+            return Err(Error::DatabaseError(e.to_string()));
+        }
+
+        // update poll
+        self.incr_votes_a_count(poll.id).await?;
+        self.incr_votes_b_count(poll.id).await?;
+        self.incr_votes_c_count(poll.id).await?;
+        self.incr_votes_d_count(poll.id).await?;
+
+        // ...
+        Ok(data.id)
+    }
+
+    pub async fn delete_pollvote(&self, id: usize, user: User) -> Result<()> {
+        let y = self.get_pollvote_by_id(id).await?;
+
+        if user.id != y.owner {
+            if !user.permissions.check(FinePermission::MANAGE_POSTS) {
+                return Err(Error::NotAllowed);
+            } else {
+                self.create_audit_log_entry(AuditLogEntry::new(
+                    user.id,
+                    format!("invoked `delete_pollvote` with x value `{id}`"),
+                ))
+                .await?
+            }
+        }
+        let conn = match self.connect().await {
+            Ok(c) => c,
+            Err(e) => return Err(Error::DatabaseConnection(e.to_string())),
+        };
+
+        let res = execute!(
+            &conn,
+            "DELETE FROM pollvotes WHERE id = $1",
+            &[&(id as i64)]
+        );
+
+        if let Err(e) = res {
+            return Err(Error::DatabaseError(e.to_string()));
+        }
+
+        self.2.remove(format!("atto.pollvote:{}", id)).await;
+
+        Ok(())
+    }
+}

crates/core/src/database/posts.rs

@@ -3,7 +3,7 @@ use super::*;
 use crate::cache::Cache;
 use crate::config::StringBan;
 use crate::model::auth::Notification;
-use crate::model::communities::Question;
+use crate::model::communities::{Poll, Question};
 use crate::model::communities_permissions::CommunityPermission;
 use crate::model::moderation::AuditLogEntry;
 use crate::model::stacks::StackSort;
@@ -108,6 +108,8 @@ impl DataManager {
             // ...
             uploads: serde_json::from_str(&get!(x->10(String))).unwrap(),
             is_deleted: get!(x->11(i32)) as i8 == 1,
+            // SKIP tsvector (12)
+            poll_id: get!(x->13(i64)) as usize,
         }
     }
 
@@ -234,14 +236,49 @@ impl DataManager {
         }
     }
 
+    /// Get the poll of the given post (if some).
+    pub async fn get_post_poll(
+        &self,
+        post: &Post,
+        user: &Option<User>,
+    ) -> Result<Option<(Poll, bool)>> {
+        let user = if let Some(ua) = user {
+            ua
+        } else {
+            return Err(Error::MiscError("Could not get user for pull".to_string()));
+        };
+
+        if post.poll_id != 0 {
+            Ok(Some(match self.get_poll_by_id(post.poll_id).await {
+                Ok(p) => (
+                    p,
+                    self.get_pollvote_by_owner_poll(user.id, post.poll_id)
+                        .await
+                        .is_ok(),
+                ),
+                Err(_) => return Err(Error::MiscError("Invalid poll ID attached".to_string())),
+            }))
+        } else {
+            return Err(Error::MiscError("Invalid poll ID attached".to_string()));
+        }
+    }
+
     /// Complete a vector of just posts with their owner as well.
     pub async fn fill_posts(
         &self,
         posts: Vec<Post>,
         ignore_users: &[usize],
         user: &Option<User>,
-    ) -> Result<Vec<(Post, User, Option<(User, Post)>, Option<(Question, User)>)>> {
-        let mut out: Vec<(Post, User, Option<(User, Post)>, Option<(Question, User)>)> = Vec::new();
+    ) -> Result<
+        Vec<(
+            Post,
+            User,
+            Option<(User, Post)>,
+            Option<(Question, User)>,
+            Option<(Poll, bool)>,
+        )>,
+    > {
+        let mut out = Vec::new();
 
         let mut users: HashMap<usize, User> = HashMap::new();
         let mut seen_user_follow_statuses: HashMap<(usize, usize), bool> = HashMap::new();
@@ -260,6 +297,7 @@ impl DataManager {
                     ua.clone(),
                     self.get_post_reposting(&post, ignore_users, user).await,
                     self.get_post_question(&post, ignore_users).await?,
+                    self.get_post_poll(&post, user).await?,
                 ));
             } else {
                 let ua = self.get_user_by_id(owner).await?;
@@ -314,6 +352,7 @@ impl DataManager {
                     ua,
                     self.get_post_reposting(&post, ignore_users, user).await,
                     self.get_post_question(&post, ignore_users).await?,
+                    self.get_post_poll(&post, user).await?,
                 ));
             }
         }
@@ -1384,7 +1423,7 @@ impl DataManager {
 
         let res = execute!(
             &conn,
-            "INSERT INTO posts VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12)",
+            "INSERT INTO posts VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, null, $13)",
             params![
                 &(data.id as i64),
                 &(data.created as i64),
@@ -1401,7 +1440,8 @@ impl DataManager {
                 &0_i32,
                 &0_i32,
                 &serde_json::to_string(&data.uploads).unwrap(),
-                &{ if data.is_deleted { 1 } else { 0 } }
+                &{ if data.is_deleted { 1 } else { 0 } },
+                &(data.poll_id as i64),
             ]
         );
 

crates/core/src/model/communities.rs

@@ -240,6 +240,8 @@ pub struct Post {
     pub uploads: Vec<usize>,
     /// If the post was deleted.
     pub is_deleted: bool,
+    /// The ID of the poll associated with this post. 0 means no poll is connected.
+    pub poll_id: usize,
 }
 
 impl Post {
@@ -249,6 +251,7 @@ impl Post {
         community: usize,
         replying_to: Option<usize>,
         owner: usize,
+        poll_id: usize,
     ) -> Self {
         Self {
             id: Snowflake::new().to_string().parse::<usize>().unwrap(),
@@ -263,12 +266,13 @@ impl Post {
             comment_count: 0,
             uploads: Vec::new(),
             is_deleted: false,
+            poll_id,
         }
     }
 
     /// Create a new [`Post`] (as a repost of the given `post_id`).
     pub fn repost(content: String, community: usize, owner: usize, post_id: usize) -> Self {
-        let mut post = Self::new(content, community, None, owner);
+        let mut post = Self::new(content, community, None, owner, 0);
 
         post.context.repost = Some(RepostContext {
             is_repost: false,
@@ -369,3 +373,107 @@ impl PostDraft {
         }
     }
 }
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct Poll {
+    pub id: usize,
+    pub owner: usize,
+    pub created: usize,
+    /// The number of milliseconds until this poll can no longer receive votes.
+    pub expires: usize,
+    // options
+    pub option_a: String,
+    pub option_b: String,
+    pub option_c: String,
+    pub option_d: String,
+    // votes
+    pub votes_a: usize,
+    pub votes_b: usize,
+    pub votes_c: usize,
+    pub votes_d: usize,
+}
+
+impl Poll {
+    /// Create a new [`Poll`].
+    pub fn new(
+        owner: usize,
+        expires: usize,
+        option_a: String,
+        option_b: String,
+        option_c: String,
+        option_d: String,
+    ) -> Self {
+        Self {
+            id: Snowflake::new().to_string().parse::<usize>().unwrap(),
+            owner,
+            created: unix_epoch_timestamp() as usize,
+            expires,
+            // options
+            option_a,
+            option_b,
+            option_c,
+            option_d,
+            // votes
+            votes_a: 0,
+            votes_b: 0,
+            votes_c: 0,
+            votes_d: 0,
+        }
+    }
+}
+
+/// Poll option (selectors) are stored in the database as numbers 0 to 3.
+///
+/// This enum allows us to convert from these numbers into letters.
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
+pub enum PollOption {
+    A,
+    B,
+    C,
+    D,
+}
+
+impl From<u8> for PollOption {
+    fn from(value: u8) -> Self {
+        match value {
+            0 => Self::A,
+            1 => Self::B,
+            2 => Self::C,
+            3 => Self::D,
+            _ => Self::A,
+        }
+    }
+}
+
+impl Into<u8> for PollOption {
+    fn into(self) -> u8 {
+        match self {
+            Self::A => 0,
+            Self::B => 1,
+            Self::C => 2,
+            Self::D => 3,
+        }
+    }
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct PollVote {
+    pub id: usize,
+    pub owner: usize,
+    pub created: usize,
+    pub poll_id: usize,
+    pub vote: PollOption,
+}
+
+impl PollVote {
+    /// Create a new [`PollVote`].
+    pub fn new(owner: usize, poll_id: usize, vote: PollOption) -> Self {
+        Self {
+            id: Snowflake::new().to_string().parse::<usize>().unwrap(),
+            owner,
+            created: unix_epoch_timestamp() as usize,
+            poll_id,
+            vote,
+        }
+    }
+}

sql_changes/posts_poll_id.sql

@@ -0,0 +1,2 @@
+ALTER TABLE posts
+ADD COLUMN poll_id BIGINT NOT NULL DEFAULT 0;