X-Git-Url: https://gitweb.ps.run/chirp/blobdiff_plain/a93c6e557f10d3c948bec3ec54b1cde6b2a7a983..e439c64e7489a392a0debce2dbf4a87ee05e367c:/src/main.zig

diff --git a/src/main.zig b/src/main.zig
index 98da131..2ccb16b 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -166,6 +166,9 @@ fn decode(text: []const u8) !std.BoundedArray(u8, 1024) {
 }
 
 const Chirp = struct {
+    const PostsPerPage = 10;
+    const UsersPerPage = 10;
+
     pub fn hash_password(password: []const u8) !PasswordHash {
         var hash_buffer = try PasswordHash.init(128);
 
@@ -440,6 +443,75 @@ const Chirp = struct {
 // }}}
 
 // html {{{
+pub fn Paginate(comptime T: type) type {
+    return struct {
+        const Self = @This();
+
+        const IterateResult = @typeInfo(@TypeOf(T.View.Iterator.next)).Fn.return_type.?;
+
+        res: *http.Response,
+        view: T.View,
+        per_page: u64,
+
+        it: T.View.Iterator,
+        starting_idx: ?T.Key,
+        count: u64 = 0,
+
+        pub fn init(res: *http.Response, view: T.View, per_page: u64) !Self {
+            var it = view.reverse_iterator();
+            if (res.req.get_param("starting_at")) |starting_at_str| {
+                it.idx = try parse_enum(T.Key, starting_at_str, 16);
+            }
+
+            if (it.idx == null) {
+                return error.InvalidIterator;
+            }
+
+            return .{
+                .res = res,
+                .view = view,
+                .per_page = per_page,
+                .it = it,
+                .starting_idx = it.idx.?,
+            };
+        }
+        pub fn next(self: *Self) IterateResult {
+            if (self.it.next()) |kv| {
+                if (self.count < self.per_page) {
+                    self.count += 1;
+                    return kv;
+                }
+            }
+            return null;
+        }
+        pub fn write_navigation(self: *Self) !void {
+            const next_idx = self.it.next();
+
+            if (self.view.head.last != self.starting_idx) {
+                var prev_it = self.view.iterator();
+                prev_it.idx = self.starting_idx.?;
+                var oldest_idx = self.starting_idx.?;
+
+                var count: u64 = 0;
+                while (prev_it.next()) |kv| {
+                    oldest_idx = kv.key;
+
+                    if (count > self.per_page) {
+                        break;
+                    } else {
+                        count += 1;
+                    }
+                }
+
+                try self.res.write("<a href=\"{s}?starting_at={x}\">Prev</a> ", .{ self.res.req.target, @intFromEnum(oldest_idx) });
+            }
+
+            if (next_idx) |kv| {
+                try self.res.write("<a href=\"{s}?starting_at={x}\">Next</a>", .{ self.res.req.target, @intFromEnum(kv.key) });
+            }
+        }
+    };
+}
 fn html_form(res: *http.Response, action: []const u8, inputs: anytype) !void {
     try res.write("<form action=\"{s}\" method=\"post\">", .{action});
 
@@ -549,9 +621,9 @@ fn write_post(res: *http.Response, txn: lmdb.Txn, logged_in: ?Login, post_id: Po
     const user = try users.get(post.user_id);
 
     try res.write(
-        \\<div>
+        \\<div id="{x}">
         \\<span><a href="/user/{s}">{s}</a>
-    , .{ user.name.constSlice(), user.display_name.constSlice() });
+    , .{ @intFromEnum(post_id), user.name.constSlice(), user.display_name.constSlice() });
     if (post.parent_id) |id| {
         try res.write(" <a href=\"/post/{x}\">..</a>", .{@intFromEnum(id)});
     }
@@ -560,6 +632,17 @@ fn write_post(res: *http.Response, txn: lmdb.Txn, logged_in: ?Login, post_id: Po
         \\<span>{s}</span><br />
     , .{ time_str(post.time).constSlice(), post.text.constSlice() });
 
+    if (logged_in != null and post.user_id == logged_in.?.user.id) {
+        // Votes
+        try res.write(
+            \\<small>
+            \\<a href="/upvotes/{0x}">{1} Upvotes</a>
+            \\<a href="/downvotes/{0x}">{2} Downvotes</a>
+            \\</small>
+            \\<br />
+        , .{ @intFromEnum(post_id), post.upvotes, post.downvotes });
+    }
+
     if (post.quote_id) |quote_id| {
         try res.write("<div style=\"border: 1px solid black;\">", .{});
         if (options.recurse > 0) {
@@ -651,7 +734,7 @@ fn write_post(res: *http.Response, txn: lmdb.Txn, logged_in: ?Login, post_id: Po
         var it = comments_view.iterator();
         var count: u8 = 0;
         while (it.next()) |comment_id| {
-            try write_post(res, txn, logged_in, comment_id, .{ .recurse = options.recurse - 1 });
+            try write_post(res, txn, logged_in, comment_id.key, .{ .recurse = options.recurse - 1 });
             try res.write("<br />", .{});
             if (options.recurse == 1) {
                 count += 1;
@@ -683,12 +766,12 @@ fn write_profile(res: *http.Response, txn: lmdb.Txn, logged_in: ?Login, user: Us
         // follow/unfollow
         if (try followers.has(login.user.id)) {
             try html_form(res, "/follow", .{
-                .{ "type=\"hidden\" name=\"user.id\" value=\"{x}\"", .{@intFromEnum(user.id)} },
+                .{ "type=\"hidden\" name=\"user_id\" value=\"{x}\"", .{@intFromEnum(user.id)} },
                 \\type="submit" value="Unfollow"
             });
         } else {
             try html_form(res, "/follow", .{
-                .{ "type=\"hidden\" name=\"user.id\" value=\"{x}\"", .{@intFromEnum(user.id)} },
+                .{ "type=\"hidden\" name=\"user_id\" value=\"{x}\"", .{@intFromEnum(user.id)} },
                 \\type="submit" value="Follow"
             });
         }
@@ -744,18 +827,21 @@ fn write_posts(res: *http.Response, txn: lmdb.Txn, logged_in: ?Login, post_list:
 }) !void {
     const posts_view = try post_list.open(txn);
 
-    var it = posts_view.reverse_iterator();
-    while (it.next()) |post_id| {
+    var paginate = try Paginate(PostList).init(res, posts_view, Chirp.PostsPerPage);
+
+    while (paginate.next()) |post_id| {
         const posts = try Db.posts(txn);
-        const post = try posts.get(post_id);
+        const post = try posts.get(post_id.key);
         if ((options.show_posts and (post.parent_id == null and post.quote_id == null)) or
             (options.show_quotes and (post.quote_id != null)) or
             (options.show_comments and (post.parent_id != null)))
         {
-            try write_post(res, txn, logged_in, post_id, .{ .recurse = 1 });
+            try write_post(res, txn, logged_in, post_id.key, .{ .recurse = 1 });
             try res.write("<br />", .{});
         }
     }
+
+    try paginate.write_navigation();
 }
 fn write_timeline(res: *http.Response, txn: lmdb.Txn, logged_in: ?Login, user_list: UserList) !void {
     const users = try Db.users(txn);
@@ -771,7 +857,7 @@ fn write_timeline(res: *http.Response, txn: lmdb.Txn, logged_in: ?Login, user_li
 
         var following_it = following.iterator();
         while (following_it.next()) |following_id| {
-            const followed_user = try users.get(following_id);
+            const followed_user = try users.get(following_id.key);
             const followed_posts = try followed_user.posts.open(txn);
 
             if (followed_posts.len() == 0) {
@@ -780,7 +866,7 @@ fn write_timeline(res: *http.Response, txn: lmdb.Txn, logged_in: ?Login, user_li
 
             var followed_posts_it = followed_posts.reverse_iterator();
             while (followed_posts_it.next()) |followed_post_id| {
-                const p = try posts.get(followed_post_id);
+                const p = try posts.get(followed_post_id.key);
 
                 if ((prev_newest_post == null or p.time < prev_newest_post.?.time) and (newest_post == null or newest_post.?.time < p.time)) {
                     newest_post = p;
@@ -801,6 +887,35 @@ fn write_timeline(res: *http.Response, txn: lmdb.Txn, logged_in: ?Login, user_li
         try res.write("<br />", .{});
     }
 }
+fn write_user(res: *http.Response, txn: lmdb.Txn, user_id: UserId) !void {
+    const users = try Db.users(txn);
+    const user = try users.get(user_id);
+    try res.write(
+        \\<a href="/user/{s}">{s}</a>
+    , .{ user.name.constSlice(), user.display_name.constSlice() });
+}
+fn write_votes(res: *http.Response, txn: lmdb.Txn, votes: VoteList, options: struct {
+    show_upvotes: bool = true,
+    show_downvotes: bool = true,
+}) !void {
+    const votes_view = try votes.open(txn);
+
+    var paginate = try Paginate(VoteList).init(res, votes_view, Chirp.UsersPerPage);
+
+    while (paginate.next()) |kv| {
+        const user_id = kv.key;
+        const vote = kv.val;
+
+        if ((options.show_upvotes and vote.kind == .Up) or
+            (options.show_downvotes and vote.kind == .Down))
+        {
+            try write_user(res, txn, user_id);
+            try res.write(" <small>{s}</small><br />", .{time_str(vote.time).constSlice()});
+        }
+    }
+
+    try paginate.write_navigation();
+}
 fn check_login(env: lmdb.Env, req: http.Request, res: *http.Response) !?Login {
     var result: ?Login = null;
 
@@ -969,20 +1084,23 @@ const GET = struct {
             const users = try Db.users(self.txn);
             const user = try users.get(user_id);
 
-            const following = try user.following.open(self.txn);
-            var it = following.iterator();
+            const following_view = try user.following.open(self.txn);
+
+            var paginate = try Paginate(UserList).init(self.res, following_view, Chirp.UsersPerPage);
 
             try self.res.write(
                 \\<h2><a href="/user/{s}">{s}</a> follows:</h2>
             , .{ user.name.constSlice(), user.display_name.constSlice() });
 
-            while (it.next()) |following_id| {
-                const following_user = try users.get(following_id);
+            while (paginate.next()) |following_id| {
+                const following_user = try users.get(following_id.key);
 
                 try self.res.write(
                     \\<a href="/user/{s}">{s}</a><br />
                 , .{ following_user.name.constSlice(), following_user.display_name.constSlice() });
             }
+
+            try paginate.write_navigation();
         } else |err| {
             try self.res.write(
                 \\<p>User not found [{}]</p>
@@ -995,20 +1113,22 @@ const GET = struct {
             const users = try Db.users(self.txn);
             const user = try users.get(user_id);
 
-            const followers = try user.followers.open(self.txn);
-            var it = followers.iterator();
+            const followers_view = try user.followers.open(self.txn);
+            var paginate = try Paginate(UserList).init(self.res, followers_view, Chirp.UsersPerPage);
 
             try self.res.write(
                 \\<h2><a href="/user/{s}">{s}</a> followers:</h2>
             , .{ user.name.constSlice(), user.display_name.constSlice() });
 
-            while (it.next()) |follower_id| {
-                const follower_user = try users.get(follower_id);
+            while (paginate.next()) |follower_id| {
+                const follower_user = try users.get(follower_id.key);
 
                 try self.res.write(
                     \\<a href="/user/{s}">{s}</a><br />
                 , .{ follower_user.name.constSlice(), follower_user.display_name.constSlice() });
             }
+
+            try paginate.write_navigation();
         } else |err| {
             try self.res.write(
                 \\<p>User not found [{}]</p>
@@ -1021,6 +1141,12 @@ const GET = struct {
             .show_comment_field = true,
         });
     }
+    pub fn @"/upvotes/"(self: Self, args: struct { post_id: PostId }) !void {
+        const posts = try Db.posts(self.txn);
+        const post = try posts.get(args.post_id);
+        try self.res.write("{} upvotes:<br />", .{post.upvotes});
+        try write_votes(self.res, self.txn, post.votes, .{});
+    }
     pub fn @"/quoted/"(self: Self, args: struct { post_id: PostId }) !void {
         const posts = try Db.posts(self.txn);
         const post = try posts.get(args.post_id);
@@ -1031,18 +1157,18 @@ const GET = struct {
             try html_form(self.res, "/quote", .{
                 .{ "type=\"hidden\" name=\"referer\" value=\"{s}\"", .{referer} },
                 .{ "type=\"hidden\" name=\"post_id\" value=\"{x}\"", .{@intFromEnum(post.id)} },
-                "type=\"text\" name=\"text\" placeholder=\"Text\"",
+                "type=\"text\" name=\"text\" placeholder=\"Text\" autofocus",
                 "type=\"submit\" value=\"Quote\"",
             });
             try self.res.write("<br />", .{});
         }
 
-        const quotes_view = try post.quotes.open(self.txn);
-        var it = quotes_view.iterator();
-        while (it.next()) |quote_id| {
-            try write_post(self.res, self.txn, self.logged_in, quote_id, .{ .recurse = 1 });
-            try self.res.write("<br />", .{});
-        }
+        // TODO: show all bc this only contains quotes?
+        try write_posts(self.res, self.txn, self.logged_in, post.quotes, .{
+            .show_posts = false,
+            .show_quotes = true,
+            .show_comments = false,
+        });
     }
     pub fn @"/list/"(self: Self, args: struct { list_id: PostList.Index }) !void {
         try write_posts(self.res, self.txn, self.logged_in, PostList{ .idx = args.list_id }, .{
@@ -1117,7 +1243,7 @@ const GET = struct {
 
             try html_form(self.res, "/post", .{
                 .{ "type=\"hidden\" name=\"referer\" value=\"{s}\"", .{referer} },
-                "type=\"text\" name=\"text\"",
+                "type=\"text\" name=\"text\" placeholder=\"Text\" autofocus",
                 "type=\"submit\" value=\"Post\"",
             });
         } else {
@@ -1551,7 +1677,7 @@ pub fn main() !void {
 
 fn handle_error(env: lmdb.Env, req: http.Request) !void {
     _ = env;
-    var res = http.Response.init(req.fd, &res_head_buffer, &res_body_buffer);
+    var res = http.Response.init(req, &res_head_buffer, &res_body_buffer);
     try write_start(&res);
     try res.write("Oops, something went terribly wrong there D:", .{});
     try write_end(&res);
@@ -1562,7 +1688,7 @@ fn handle_request(env: lmdb.Env, req: http.Request) !void {
     // std.debug.print("[{}]: {s}\n", .{ req.method, req.head.? });
 
     // reponse
-    var res = http.Response.init(req.fd, &res_head_buffer, &res_body_buffer);
+    var res = http.Response.init(req, &res_head_buffer, &res_body_buffer);
 
     // check session token
     const logged_in: ?Login = try check_login(env, req, &res);