<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `database/src/episode.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>episode.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">☰</button><a class="sidebar-logo" href="../../database/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a><h2 class="location"></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../../database/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../../database/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><button type="button">?</button></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav></div><section id="main-content" class="content"><div class="example-wrap"><pre class="line-numbers"><span id="1">1</span>
<span id="2">2</span>
<span id="3">3</span>
<span id="4">4</span>
<span id="5">5</span>
<span id="6">6</span>
<span id="7">7</span>
<span id="8">8</span>
<span id="9">9</span>
<span id="10">10</span>
<span id="11">11</span>
<span id="12">12</span>
<span id="13">13</span>
<span id="14">14</span>
<span id="15">15</span>
<span id="16">16</span>
<span id="17">17</span>
<span id="18">18</span>
<span id="19">19</span>
<span id="20">20</span>
<span id="21">21</span>
<span id="22">22</span>
<span id="23">23</span>
<span id="24">24</span>
<span id="25">25</span>
<span id="26">26</span>
<span id="27">27</span>
<span id="28">28</span>
<span id="29">29</span>
<span id="30">30</span>
<span id="31">31</span>
<span id="32">32</span>
<span id="33">33</span>
<span id="34">34</span>
<span id="35">35</span>
<span id="36">36</span>
<span id="37">37</span>
<span id="38">38</span>
<span id="39">39</span>
<span id="40">40</span>
<span id="41">41</span>
<span id="42">42</span>
<span id="43">43</span>
<span id="44">44</span>
<span id="45">45</span>
<span id="46">46</span>
<span id="47">47</span>
<span id="48">48</span>
<span id="49">49</span>
<span id="50">50</span>
<span id="51">51</span>
<span id="52">52</span>
<span id="53">53</span>
<span id="54">54</span>
<span id="55">55</span>
<span id="56">56</span>
<span id="57">57</span>
<span id="58">58</span>
<span id="59">59</span>
<span id="60">60</span>
<span id="61">61</span>
<span id="62">62</span>
<span id="63">63</span>
<span id="64">64</span>
<span id="65">65</span>
<span id="66">66</span>
<span id="67">67</span>
<span id="68">68</span>
<span id="69">69</span>
<span id="70">70</span>
<span id="71">71</span>
<span id="72">72</span>
<span id="73">73</span>
<span id="74">74</span>
<span id="75">75</span>
<span id="76">76</span>
<span id="77">77</span>
<span id="78">78</span>
<span id="79">79</span>
<span id="80">80</span>
<span id="81">81</span>
<span id="82">82</span>
<span id="83">83</span>
<span id="84">84</span>
<span id="85">85</span>
<span id="86">86</span>
<span id="87">87</span>
<span id="88">88</span>
<span id="89">89</span>
<span id="90">90</span>
<span id="91">91</span>
<span id="92">92</span>
<span id="93">93</span>
<span id="94">94</span>
<span id="95">95</span>
<span id="96">96</span>
<span id="97">97</span>
<span id="98">98</span>
<span id="99">99</span>
<span id="100">100</span>
<span id="101">101</span>
<span id="102">102</span>
<span id="103">103</span>
<span id="104">104</span>
<span id="105">105</span>
<span id="106">106</span>
<span id="107">107</span>
<span id="108">108</span>
<span id="109">109</span>
<span id="110">110</span>
<span id="111">111</span>
<span id="112">112</span>
<span id="113">113</span>
<span id="114">114</span>
<span id="115">115</span>
<span id="116">116</span>
<span id="117">117</span>
<span id="118">118</span>
<span id="119">119</span>
<span id="120">120</span>
<span id="121">121</span>
<span id="122">122</span>
<span id="123">123</span>
<span id="124">124</span>
<span id="125">125</span>
<span id="126">126</span>
<span id="127">127</span>
<span id="128">128</span>
<span id="129">129</span>
<span id="130">130</span>
<span id="131">131</span>
<span id="132">132</span>
<span id="133">133</span>
<span id="134">134</span>
<span id="135">135</span>
<span id="136">136</span>
<span id="137">137</span>
<span id="138">138</span>
<span id="139">139</span>
<span id="140">140</span>
<span id="141">141</span>
<span id="142">142</span>
<span id="143">143</span>
<span id="144">144</span>
<span id="145">145</span>
<span id="146">146</span>
<span id="147">147</span>
<span id="148">148</span>
<span id="149">149</span>
<span id="150">150</span>
<span id="151">151</span>
<span id="152">152</span>
<span id="153">153</span>
<span id="154">154</span>
<span id="155">155</span>
<span id="156">156</span>
<span id="157">157</span>
<span id="158">158</span>
<span id="159">159</span>
<span id="160">160</span>
<span id="161">161</span>
<span id="162">162</span>
<span id="163">163</span>
<span id="164">164</span>
<span id="165">165</span>
<span id="166">166</span>
<span id="167">167</span>
<span id="168">168</span>
<span id="169">169</span>
<span id="170">170</span>
<span id="171">171</span>
<span id="172">172</span>
<span id="173">173</span>
<span id="174">174</span>
<span id="175">175</span>
<span id="176">176</span>
<span id="177">177</span>
<span id="178">178</span>
<span id="179">179</span>
<span id="180">180</span>
<span id="181">181</span>
<span id="182">182</span>
<span id="183">183</span>
<span id="184">184</span>
<span id="185">185</span>
<span id="186">186</span>
<span id="187">187</span>
<span id="188">188</span>
<span id="189">189</span>
<span id="190">190</span>
<span id="191">191</span>
<span id="192">192</span>
<span id="193">193</span>
<span id="194">194</span>
<span id="195">195</span>
<span id="196">196</span>
<span id="197">197</span>
<span id="198">198</span>
<span id="199">199</span>
<span id="200">200</span>
<span id="201">201</span>
<span id="202">202</span>
<span id="203">203</span>
<span id="204">204</span>
<span id="205">205</span>
<span id="206">206</span>
<span id="207">207</span>
<span id="208">208</span>
<span id="209">209</span>
<span id="210">210</span>
<span id="211">211</span>
<span id="212">212</span>
<span id="213">213</span>
<span id="214">214</span>
<span id="215">215</span>
<span id="216">216</span>
<span id="217">217</span>
<span id="218">218</span>
<span id="219">219</span>
<span id="220">220</span>
<span id="221">221</span>
<span id="222">222</span>
<span id="223">223</span>
<span id="224">224</span>
<span id="225">225</span>
<span id="226">226</span>
<span id="227">227</span>
<span id="228">228</span>
<span id="229">229</span>
<span id="230">230</span>
<span id="231">231</span>
<span id="232">232</span>
<span id="233">233</span>
<span id="234">234</span>
<span id="235">235</span>
<span id="236">236</span>
<span id="237">237</span>
<span id="238">238</span>
<span id="239">239</span>
<span id="240">240</span>
<span id="241">241</span>
<span id="242">242</span>
<span id="243">243</span>
<span id="244">244</span>
<span id="245">245</span>
<span id="246">246</span>
<span id="247">247</span>
<span id="248">248</span>
<span id="249">249</span>
<span id="250">250</span>
<span id="251">251</span>
<span id="252">252</span>
<span id="253">253</span>
<span id="254">254</span>
<span id="255">255</span>
<span id="256">256</span>
<span id="257">257</span>
<span id="258">258</span>
<span id="259">259</span>
<span id="260">260</span>
<span id="261">261</span>
<span id="262">262</span>
<span id="263">263</span>
<span id="264">264</span>
<span id="265">265</span>
<span id="266">266</span>
<span id="267">267</span>
<span id="268">268</span>
<span id="269">269</span>
<span id="270">270</span>
<span id="271">271</span>
<span id="272">272</span>
<span id="273">273</span>
<span id="274">274</span>
<span id="275">275</span>
<span id="276">276</span>
<span id="277">277</span>
<span id="278">278</span>
<span id="279">279</span>
<span id="280">280</span>
<span id="281">281</span>
<span id="282">282</span>
<span id="283">283</span>
<span id="284">284</span>
<span id="285">285</span>
<span id="286">286</span>
<span id="287">287</span>
<span id="288">288</span>
<span id="289">289</span>
<span id="290">290</span>
<span id="291">291</span>
<span id="292">292</span>
<span id="293">293</span>
<span id="294">294</span>
<span id="295">295</span>
<span id="296">296</span>
<span id="297">297</span>
<span id="298">298</span>
<span id="299">299</span>
<span id="300">300</span>
<span id="301">301</span>
<span id="302">302</span>
<span id="303">303</span>
<span id="304">304</span>
<span id="305">305</span>
<span id="306">306</span>
<span id="307">307</span>
<span id="308">308</span>
<span id="309">309</span>
<span id="310">310</span>
<span id="311">311</span>
<span id="312">312</span>
<span id="313">313</span>
<span id="314">314</span>
<span id="315">315</span>
<span id="316">316</span>
<span id="317">317</span>
<span id="318">318</span>
<span id="319">319</span>
<span id="320">320</span>
<span id="321">321</span>
<span id="322">322</span>
<span id="323">323</span>
<span id="324">324</span>
<span id="325">325</span>
<span id="326">326</span>
<span id="327">327</span>
<span id="328">328</span>
<span id="329">329</span>
<span id="330">330</span>
<span id="331">331</span>
<span id="332">332</span>
<span id="333">333</span>
<span id="334">334</span>
<span id="335">335</span>
<span id="336">336</span>
<span id="337">337</span>
<span id="338">338</span>
<span id="339">339</span>
<span id="340">340</span>
<span id="341">341</span>
<span id="342">342</span>
<span id="343">343</span>
<span id="344">344</span>
<span id="345">345</span>
<span id="346">346</span>
<span id="347">347</span>
<span id="348">348</span>
<span id="349">349</span>
<span id="350">350</span>
<span id="351">351</span>
<span id="352">352</span>
<span id="353">353</span>
<span id="354">354</span>
<span id="355">355</span>
<span id="356">356</span>
<span id="357">357</span>
<span id="358">358</span>
<span id="359">359</span>
<span id="360">360</span>
<span id="361">361</span>
<span id="362">362</span>
<span id="363">363</span>
<span id="364">364</span>
<span id="365">365</span>
<span id="366">366</span>
<span id="367">367</span>
<span id="368">368</span>
<span id="369">369</span>
<span id="370">370</span>
<span id="371">371</span>
<span id="372">372</span>
<span id="373">373</span>
<span id="374">374</span>
<span id="375">375</span>
<span id="376">376</span>
<span id="377">377</span>
<span id="378">378</span>
<span id="379">379</span>
<span id="380">380</span>
<span id="381">381</span>
<span id="382">382</span>
<span id="383">383</span>
<span id="384">384</span>
<span id="385">385</span>
<span id="386">386</span>
<span id="387">387</span>
<span id="388">388</span>
<span id="389">389</span>
<span id="390">390</span>
<span id="391">391</span>
<span id="392">392</span>
<span id="393">393</span>
<span id="394">394</span>
<span id="395">395</span>
<span id="396">396</span>
<span id="397">397</span>
<span id="398">398</span>
<span id="399">399</span>
<span id="400">400</span>
<span id="401">401</span>
<span id="402">402</span>
<span id="403">403</span>
<span id="404">404</span>
<span id="405">405</span>
<span id="406">406</span>
<span id="407">407</span>
<span id="408">408</span>
<span id="409">409</span>
<span id="410">410</span>
<span id="411">411</span>
<span id="412">412</span>
<span id="413">413</span>
<span id="414">414</span>
<span id="415">415</span>
<span id="416">416</span>
<span id="417">417</span>
<span id="418">418</span>
<span id="419">419</span>
<span id="420">420</span>
<span id="421">421</span>
<span id="422">422</span>
<span id="423">423</span>
<span id="424">424</span>
<span id="425">425</span>
<span id="426">426</span>
<span id="427">427</span>
<span id="428">428</span>
<span id="429">429</span>
</pre><pre class="rust"><code><span class="kw">use </span><span class="kw">crate</span>::media::InsertableMedia;
<span class="kw">use </span><span class="kw">crate</span>::media::Media;
<span class="kw">use </span><span class="kw">crate</span>::media::UpdateMedia;
<span class="kw">use </span><span class="kw">crate</span>::user::UserID;
<span class="kw">use </span><span class="kw">crate</span>::DatabaseError;
<span class="kw">use </span>serde::{Deserialize, Serialize};
<span class="doccomment">/// Episode struct encapsulates a media entry representing a episode
</span><span class="attribute">#[derive(Clone, Serialize, Debug)]
</span><span class="kw">pub struct </span>Episode {
<span class="attribute">#[serde(skip_serializing)]
</span><span class="kw">pub </span>id: i64,
<span class="doccomment">/// Season id foreign_key
</span><span class="kw">pub </span>seasonid: i64,
<span class="doccomment">/// episode number
</span><span class="kw">pub </span>episode: i64,
<span class="doccomment">/// Regerence to a media object which represents this epsiode.
/// We are essnetially aliasing and wrapping around Media transparently, behind the
/// scene in the db episode inherits all fields from media.
</span><span class="attribute">#[serde(flatten)]
</span><span class="kw">pub </span>media: Media,
}
<span class="doccomment">/// This struct is purely used for querying episodes which later gets converted into a Episode
/// struct
</span><span class="attribute">#[derive(PartialEq, Debug, Copy, Clone, sqlx::FromRow)]
</span><span class="kw">pub struct </span>EpisodeWrapper {
<span class="kw">pub </span>id: i64,
<span class="kw">pub </span>seasonid: i64,
<span class="kw">pub </span>episode_: i64,
}
<span class="kw">impl </span>Episode {
<span class="kw">pub async fn </span>get_first_for_season(
conn: <span class="kw-2">&mut </span><span class="kw">crate</span>::Transaction<<span class="lifetime">'_</span>>,
season_id: i64,
) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, DatabaseError> {
<span class="kw">let </span>wrapper = <span class="macro">sqlx::query_as!</span>(
EpisodeWrapper,
<span class="string">r#"SELECT id as "id!", seasonid, episode_
FROM episode
WHERE seasonid = ?
ORDER BY episode_ ASC"#</span>,
season_id
)
.fetch_one(<span class="kw-2">&mut *</span>conn)
.<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">let </span>ep = Media::get(conn, wrapper.id).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(wrapper.into_episode(ep))
}
<span class="kw">pub async fn </span>get_first_for_show(
conn: <span class="kw-2">&mut </span><span class="kw">crate</span>::Transaction<<span class="lifetime">'_</span>>,
tv_id: i64,
) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, DatabaseError> {
<span class="kw">let </span>wrapper = <span class="macro">sqlx::query_as!</span>(
EpisodeWrapper,
<span class="string">r#"SELECT episode.id as "id!", seasonid, episode_
FROM episode
INNER JOIN season on season.id = episode.seasonid
WHERE season.tvshowid = ?
ORDER BY episode_ ASC, season.season_number ASC
LIMIT 1"#</span>,
tv_id
)
.fetch_one(<span class="kw-2">&mut *</span>conn)
.<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">let </span>ep = Media::get(conn, wrapper.id).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(wrapper.into_episode(ep))
}
<span class="doccomment">/// Method returns all of the episodes belonging to a tv show.
///
/// # Arguments
/// * `conn` - a mutable reference to a sqlx transaction.
/// * `media` - reference to a media object which should be a tv show.
</span><span class="kw">pub async fn </span>get_all_of_tv(
conn: <span class="kw-2">&mut </span><span class="kw">crate</span>::Transaction<<span class="lifetime">'_</span>>,
tv_show_id: i64,
) -> <span class="prelude-ty">Result</span><Vec<<span class="self">Self</span>>, DatabaseError> {
<span class="kw">let </span><span class="kw-2">mut </span>episodes = <span class="macro">vec!</span>[];
<span class="kw">let </span>wrappers = <span class="macro">sqlx::query_as!</span>(
EpisodeWrapper,
<span class="string">r#"SELECT episode.id as "id!", episode.episode_, episode.seasonid FROM episode
INNER JOIN season ON season.id = episode.seasonid
INNER JOIN _tblmedia ON _tblmedia.id = season.tvshowid
WHERE _tblmedia.id = ?
ORDER BY season.season_number, episode.episode_"#</span>,
tv_show_id
)
.fetch_all(<span class="kw-2">&mut *</span>conn)
.<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">for </span>wrapper <span class="kw">in </span>wrappers {
<span class="kw">if let </span><span class="prelude-val">Ok</span>(episode) = Media::get(<span class="kw-2">&mut *</span>conn, wrapper.id <span class="kw">as </span>i64).<span class="kw">await </span>{
episodes.push(wrapper.into_episode(episode))
}
}
<span class="prelude-val">Ok</span>(episodes)
}
<span class="comment">// FIXME: This function might be especially heavy on the DB.
</span><span class="doccomment">/// Method returns all of the episodes belonging to a season.
///
/// # Arguments
/// * `conn` - mutable reference to a sqlx transaction.
/// * `media` - reference to a season object/entry.
</span><span class="kw">pub async fn </span>get_all_of_season(
conn: <span class="kw-2">&mut </span><span class="kw">crate</span>::Transaction<<span class="lifetime">'_</span>>,
season_id: i64,
) -> <span class="prelude-ty">Result</span><Vec<Episode>, DatabaseError> {
<span class="kw">let </span>wrappers = <span class="macro">sqlx::query_as!</span>(
EpisodeWrapper,
<span class="string">r#"SELECT id as "id!", episode_, seasonid FROM episode WHERE seasonid = ?"#</span>,
season_id
)
.fetch_all(<span class="kw-2">&mut *</span>conn)
.<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">let </span><span class="kw-2">mut </span>episodes = <span class="macro">vec!</span>[];
<span class="kw">for </span>wrapper <span class="kw">in </span>wrappers {
<span class="kw">if let </span><span class="prelude-val">Ok</span>(episode) = Media::get(<span class="kw-2">&mut *</span>conn, wrapper.id <span class="kw">as </span>i64).<span class="kw">await </span>{
episodes.push(wrapper.into_episode(episode))
}
}
<span class="prelude-val">Ok</span>(episodes)
}
<span class="doccomment">/// Method returns a episodes discriminated by episode number, season number and tv show id
///
/// # Arguments
/// * `conn` - mutable reference to a sqlx transaction.
/// * `id` - The id of a tv show we target
/// * `season_num` - The season we are targetting
/// * `ep_num` - Episode we are targetting
</span><span class="kw">pub async fn </span>get(
conn: <span class="kw-2">&mut </span><span class="kw">crate</span>::Transaction<<span class="lifetime">'_</span>>,
tv_id: i64,
season_num: i64,
ep_num: i64,
) -> <span class="prelude-ty">Result</span><Episode, DatabaseError> {
<span class="kw">let </span>wrapper = <span class="macro">sqlx::query_as!</span>(
EpisodeWrapper,
<span class="string">r#"SELECT episode.id as "id!", episode.episode_, episode.seasonid FROM episode
INNER JOIN season ON season.id = episode.seasonid
WHERE season.tvshowid = ?
AND season.season_number = ?
AND episode.episode_ = ?"#</span>,
tv_id,
season_num,
ep_num
)
.fetch_one(<span class="kw-2">&mut *</span>conn)
.<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">let </span>ep = Media::get(conn, wrapper.id <span class="kw">as </span>i64).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(wrapper.into_episode(ep))
}
<span class="kw">pub async fn </span>get_by_id(
conn: <span class="kw-2">&mut </span><span class="kw">crate</span>::Transaction<<span class="lifetime">'_</span>>,
episode_id: i64,
) -> <span class="prelude-ty">Result</span><Episode, DatabaseError> {
<span class="kw">let </span>wrapper = <span class="macro">sqlx::query_as!</span>(
EpisodeWrapper,
<span class="string">r#"SELECT episode.* FROM episode
WHERE episode.id = ?"#</span>,
episode_id
)
.fetch_one(<span class="kw-2">&mut *</span>conn)
.<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">let </span>ep = Media::get(conn, wrapper.id <span class="kw">as </span>i64).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(wrapper.into_episode(ep))
}
<span class="kw">pub async fn </span>get_season_episode_by_id(
conn: <span class="kw-2">&mut </span><span class="kw">crate</span>::Transaction<<span class="lifetime">'_</span>>,
episode_id: i64,
) -> <span class="prelude-ty">Result</span><(i64, i64), DatabaseError> {
<span class="kw">struct </span>Record {
episode: i64,
season: i64,
}
<span class="kw">let </span>result = <span class="macro">sqlx::query_as!</span>(
Record,
<span class="string">"SELECT episode_ as episode, season.season_number as season FROM episode
INNER JOIN season ON season.id = episode.seasonid
WHERE episode.id = ?"</span>,
episode_id
)
.fetch_one(<span class="kw-2">&mut *</span>conn)
.<span class="kw">await</span><span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>((result.season, result.episode))
}
<span class="kw">pub async fn </span>get_season_number(
<span class="kw-2">&</span><span class="self">self</span>,
conn: <span class="kw-2">&mut </span><span class="kw">crate</span>::Transaction<<span class="lifetime">'_</span>>,
) -> <span class="prelude-ty">Result</span><i64, DatabaseError> {
<span class="kw">let </span>record = <span class="macro">sqlx::query!</span>(
<span class="string">"SELECT season.season_number FROM season
WHERE season.id = ?"</span>,
<span class="self">self</span>.seasonid
)
.fetch_one(<span class="kw-2">&mut *</span>conn)
.<span class="kw">await</span><span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(record.season_number)
}
<span class="doccomment">/// Function will query for the episode after the episode passed in.
</span><span class="kw">pub async fn </span>get_next_episode(
<span class="kw-2">&</span><span class="self">self</span>,
conn: <span class="kw-2">&mut </span><span class="kw">crate</span>::Transaction<<span class="lifetime">'_</span>>,
) -> <span class="prelude-ty">Result</span><Episode, DatabaseError> {
<span class="kw">let </span>season_number = <span class="self">self</span>.get_season_number(<span class="kw-2">&mut *</span>conn).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">let </span>record = <span class="macro">sqlx::query_as!</span>(
EpisodeWrapper,
<span class="string">r#"SELECT episode.id as "id!", episode.seasonid, episode.episode_ FROM episode
INNER JOIN season ON season.id = episode.seasonid
WHERE season.tvshowid = (
SELECT _tblseason.tvshowid FROM _tblseason
WHERE _tblseason.id = ?
) AND ((
episode.episode_ > ? AND
season.season_number = ?
) OR season.season_number > ?)
ORDER BY season.season_number, episode.episode_
LIMIT 1"#</span>,
<span class="self">self</span>.seasonid,
<span class="self">self</span>.episode,
season_number,
season_number
)
.fetch_one(<span class="kw-2">&mut *</span>conn)
.<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">let </span>ep = Media::get(conn, record.id <span class="kw">as </span>i64).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(record.into_episode(ep))
}
<span class="doccomment">/// Function will query for the episode after the episode passed in.
</span><span class="kw">pub async fn </span>get_prev_episode(
<span class="kw-2">&</span><span class="self">self</span>,
conn: <span class="kw-2">&mut </span><span class="kw">crate</span>::Transaction<<span class="lifetime">'_</span>>,
) -> <span class="prelude-ty">Result</span><Episode, DatabaseError> {
<span class="kw">let </span>season_number = <span class="self">self</span>.get_season_number(<span class="kw-2">&mut *</span>conn).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">let </span>record = <span class="macro">sqlx::query_as!</span>(
EpisodeWrapper,
<span class="string">r#"SELECT episode.id as "id!", episode.seasonid, episode.episode_ FROM episode
INNER JOIN season ON season.id = episode.seasonid
WHERE season.tvshowid = (
SELECT _tblseason.tvshowid FROM _tblseason
WHERE _tblseason.id = ?
) AND ((
episode.episode_ < ? AND
season.season_number = ?
) OR season.season_number < ?)
ORDER BY season.season_number DESC, episode.episode_ DESC
LIMIT 1"#</span>,
<span class="self">self</span>.seasonid,
<span class="self">self</span>.episode,
season_number,
season_number
)
.fetch_one(<span class="kw-2">&mut *</span>conn)
.<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">let </span>ep = Media::get(conn, record.id <span class="kw">as </span>i64).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(record.into_episode(ep))
}
<span class="doccomment">/// Function will query the last episode that was watched for a show.
</span><span class="kw">pub async fn </span>get_last_watched_episode(
conn: <span class="kw-2">&mut </span><span class="kw">crate</span>::Transaction<<span class="lifetime">'_</span>>,
tvid: i64,
uid: UserID,
) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><Episode>, DatabaseError> {
<span class="comment">// FIXME: We're using the query_as function instead of macro because `LEFT OUTER JOIN`
// crashes the proc macro.
</span><span class="kw">let </span>result = sqlx::query_as::<<span class="kw">_</span>, EpisodeWrapper>(
<span class="string">"SELECT episode.* FROM episode
INNER JOIN season ON season.id = episode.seasonid
INNER JOIN progress ON progress.media_id = episode.id AND progress.user_id = ?
WHERE season.tvshowid = ?
ORDER BY progress.populated DESC
LIMIT 1"</span>,
)
.bind(uid)
.bind(tvid)
.fetch_optional(<span class="kw-2">&mut *</span>conn)
.<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">let </span>result = <span class="kw">if let </span><span class="prelude-val">Some</span>(r) = result {
r
} <span class="kw">else </span>{
<span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>);
};
<span class="kw">let </span>ep = Media::get(conn, result.id <span class="kw">as </span>i64).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(result.into_episode(ep)))
}
<span class="kw">pub async fn </span>get_seasonid(
tx: <span class="kw-2">&mut </span><span class="kw">crate</span>::Transaction<<span class="lifetime">'_</span>>,
episodeid: i64,
) -> <span class="prelude-ty">Result</span><i64, DatabaseError> {
<span class="prelude-val">Ok</span>(<span class="macro">sqlx::query!</span>(
<span class="string">"SELECT episode.seasonid FROM episode WHERE episode.id = ?"</span>,
episodeid
)
.fetch_one(<span class="kw-2">&mut *</span>tx)
.<span class="kw">await</span><span class="question-mark">?
</span>.seasonid)
}
<span class="doccomment">/// Method deletes a episode based on the tv show id, season number, and episode number
///
/// # Arguments
/// * `id` - The id of a tv show we target
/// * `season_num` - The season we are targetting
/// * `ep_num` - Episode we are targetting
</span><span class="kw">pub async fn </span>delete(
conn: <span class="kw-2">&mut </span><span class="kw">crate</span>::Transaction<<span class="lifetime">'_</span>>,
episode_id: i64,
) -> <span class="prelude-ty">Result</span><usize, DatabaseError> {
<span class="comment">// NOTE: no need to manually delete the episode entry from `episode` because of the
// cascade delete.
</span><span class="prelude-val">Ok</span>(Media::delete(conn, episode_id).<span class="kw">await</span><span class="question-mark">?</span>)
}
}
<span class="attribute">#[derive(Debug)]
</span><span class="kw">pub struct </span>InsertableEpisode {
<span class="kw">pub </span>media: InsertableMedia,
<span class="kw">pub </span>seasonid: i64,
<span class="kw">pub </span>episode: i64,
}
<span class="kw">impl </span>InsertableEpisode {
<span class="doccomment">/// Method inserts a new episode into the database
</span><span class="kw">pub async fn </span>insert(<span class="kw-2">&</span><span class="self">self</span>, conn: <span class="kw-2">&mut </span><span class="kw">crate</span>::Transaction<<span class="lifetime">'_</span>>) -> <span class="prelude-ty">Result</span><i64, DatabaseError> {
<span class="kw">if let </span><span class="prelude-val">Some</span>(r) = <span class="macro">sqlx::query!</span>(
<span class="string">r#"SELECT id as "id!" FROM episode WHERE episode.seasonid = ? AND episode.episode_ = ?"#</span>,
<span class="self">self</span>.seasonid,
<span class="self">self</span>.episode
)
.fetch_optional(<span class="kw-2">&mut *</span>conn)
.<span class="kw">await</span><span class="question-mark">?
</span>{
<span class="kw">return </span><span class="prelude-val">Ok</span>(r.id);
}
<span class="comment">// NOTE: use insert blind here just in case we have conflicts between episode names.
</span><span class="kw">let </span>media_id = <span class="self">self</span>.media.insert_blind(<span class="kw-2">&mut *</span>conn).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">let </span>result = <span class="macro">sqlx::query!</span>(
<span class="string">"INSERT INTO episode (id, episode_, seasonid)
VALUES ($1, $2, $3)"</span>,
media_id,
<span class="self">self</span>.episode,
<span class="self">self</span>.seasonid
)
.execute(<span class="kw-2">&mut *</span>conn)
.<span class="kw">await</span><span class="question-mark">?
</span>.last_insert_rowid();
<span class="prelude-val">Ok</span>(result)
}
}
<span class="kw">impl </span>EpisodeWrapper {
<span class="kw">pub fn </span>into_episode(<span class="self">self</span>, media: Media) -> Episode {
Episode {
id: <span class="self">self</span>.id,
seasonid: <span class="self">self</span>.seasonid,
episode: <span class="self">self</span>.episode_,
media,
}
}
}
<span class="attribute">#[derive(Deserialize, Default, Debug)]
</span><span class="kw">pub struct </span>UpdateEpisode {
<span class="kw">pub </span>seasonid: <span class="prelude-ty">Option</span><i64>,
<span class="kw">pub </span>episode: <span class="prelude-ty">Option</span><i64>,
<span class="attribute">#[serde(flatten)]
</span><span class="kw">pub </span>media: UpdateMedia,
}
<span class="kw">impl </span>UpdateEpisode {
<span class="doccomment">/// Method updates the rows of a episode.
///
/// # Arguments
/// * `id` - id of the episode we wish to update.
</span><span class="kw">pub async fn </span>update(
<span class="kw-2">&</span><span class="self">self</span>,
conn: <span class="kw-2">&mut </span><span class="kw">crate</span>::Transaction<<span class="lifetime">'_</span>>,
id: i64,
) -> <span class="prelude-ty">Result</span><usize, DatabaseError> {
<span class="self">self</span>.media.update(<span class="kw-2">&mut *</span>conn, id).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="macro">crate::opt_update!</span>(conn,
<span class="string">"UPDATE episode SET seasonid = ? WHERE id = ?" </span>=> (<span class="self">self</span>.seasonid, id),
<span class="string">"UPDATE episode SET episode_ = ? WHERE id = ?" </span>=> (<span class="self">self</span>.episode, id)
);
<span class="prelude-val">Ok</span>(<span class="number">1</span>)
}
}
</code></pre></div>
</section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="database" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (e7119a030 2022-09-22)" ></div></body></html>