109 lines
3.4 KiB
Java
109 lines
3.4 KiB
Java
package eu.m724.blog.data;
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import org.eclipse.jgit.api.Git;
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import org.eclipse.jgit.api.errors.GitAPIException;
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import java.io.*;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.time.*;
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import java.util.HashMap;
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import java.util.Map;
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public record Post(
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String slug,
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String title,
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String summary,
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boolean draft,
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int revisions,
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String createdBy,
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ZonedDateTime createdAt,
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String modifiedBy,
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ZonedDateTime modifiedAt,
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Map<String, String> custom,
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String rawContent
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) {
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// this is because we'll be not only supporting html
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public String htmlContent() {
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return rawContent;
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}
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public static Post fromFile(Git git, Path path) throws IOException {
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/* read properties before filtering */
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var slug = path.getFileName().toString().split("\\.")[0];
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path = Path.of("posts").resolve(path);
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var lines = Files.readAllLines(git.getRepository().getDirectory().toPath().resolve(path));
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var properties = new HashMap<String, String>();
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String line;
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while ((line = lines.removeFirst()) != null) {
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var parts = line.split(" ");
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var key = parts[0].toLowerCase();
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var data = line.substring(key.length()).strip();
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if (key.isEmpty()) // empty key means end of content
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break;
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if (properties.putIfAbsent(key, data) != null)
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System.out.printf("Post %s: Duplicate property \"%s\". Only the first one will be used.\n", slug, key);
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}
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var content = String.join("\n", lines).strip();
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/* filter properties from read file */
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String title = "NO TITLE SET";
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String summary = "NO SUMMARY SET";
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boolean draft = true;
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var custom = new HashMap<String, String>();
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for (Map.Entry<String, String> property : properties.entrySet()) {
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var value = property.getValue();
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switch (property.getKey()) {
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case "title":
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title = value;
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break;
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case "summary":
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summary = value;
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break;
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case "live": // a post is live (not draft) if the key is there
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draft = false;
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break;
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default:
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custom.put(property.getKey(), value);
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}
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}
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/* get revisions */
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int revisions = 0;
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String createdBy = "UNKNOWN AUTHOR";
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ZonedDateTime createdAt = Instant.ofEpochMilli(0).atZone(ZoneOffset.UTC);
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String modifiedBy = "UNKNOWN AUTHOR";
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ZonedDateTime modifiedAt = Instant.ofEpochMilli(0).atZone(ZoneOffset.UTC);
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try {
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for (var commit : git.log().addPath(path.toString()).call()) {
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createdBy = commit.getAuthorIdent().getName();
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createdAt = Instant.ofEpochSecond(commit.getCommitTime()).atZone(ZoneOffset.UTC);
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if (revisions++ == 0) {
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modifiedBy = createdBy;
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modifiedAt = createdAt;
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}
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}
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} catch (GitAPIException e) {
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draft = true;
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System.out.printf("%s: Git exception, making draft: %s\n", slug, e.getMessage());
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}
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return new Post(slug, title, summary, draft, revisions, createdBy, createdAt, modifiedBy, modifiedAt, custom, content);
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}
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}
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