package main

import (
	"net/http"
)

func handle_repo_index(w http.ResponseWriter, r *http.Request) {
	data := make(map[string]any)
	group_name, repo_name := r.PathValue("group_name"), r.PathValue("repo_name")
	data["group_name"], data["repo_name"] = group_name, repo_name
	repo, err := open_git_repo(group_name, repo_name)
	if err != nil {
		_, _ = w.Write([]byte("Error opening repo: " + err.Error()))
		return
	}
	head, err := repo.Head()
	if err != nil {
		_, _ = w.Write([]byte("Error getting repo HEAD: " + err.Error()))
		return
	}
	data["ref"] = head.Name().Short()
	head_hash := head.Hash()
	recent_commits, err := get_recent_commits(repo, head_hash, 3)
	if err != nil {
		_, _ = w.Write([]byte("Error getting recent commits: " + err.Error()))
		return
	}
	data["commits"] = recent_commits
	commit_object, err := repo.CommitObject(head_hash)
	if err != nil {
		_, _ = w.Write([]byte("Error getting commit object: " + err.Error()))
		return
	}
	tree, err := commit_object.Tree()
	if err != nil {
		_, _ = w.Write([]byte("Error getting file tree: " + err.Error()))
		return
	}

	data["readme"] = render_readme_at_tree(tree)

	data["readme_filename"], data["readme"] = render_readme_at_tree(tree)

	data["files"] = build_display_git_tree(tree)

	err = templates.ExecuteTemplate(w, "repo_index", data)
	if err != nil {
		_, _ = w.Write([]byte("Error rendering template: " + err.Error()))
		return
	}
}

package main

import (
	"net/http"

	"github.com/go-git/go-git/v5/plumbing"
)

// TODO: I probably shouldn't include *all* commits here...
func handle_repo_log(w http.ResponseWriter, r *http.Request) {
	data := make(map[string]any)
	group_name, repo_name, ref_name := r.PathValue("group_name"), r.PathValue("repo_name"), r.PathValue("ref")
	data["group_name"], data["repo_name"], data["ref"] = group_name, repo_name, ref_name
	repo, err := open_git_repo(group_name, repo_name)
	if err != nil {
		_, _ = w.Write([]byte("Error opening repo: " + err.Error()))
		return
	}
	ref, err := repo.Reference(plumbing.NewBranchReferenceName(ref_name), true)
	if err != nil {
		_, _ = w.Write([]byte("Error getting repo reference: " + err.Error()))
		return
	}
	ref_hash := ref.Hash()

	recent_commits, err := get_recent_commits(repo, ref_hash, -1)

	commits, err := get_recent_commits(repo, ref_hash, -1)

	if err != nil {
		_, _ = w.Write([]byte("Error getting recent commits: " + err.Error()))
		return
	}

	data["commits"] = recent_commits
	commit_object, err := repo.CommitObject(ref_hash)
	if err != nil {
		_, _ = w.Write([]byte("Error getting commit object: " + err.Error()))
		return
	}
	tree, err := commit_object.Tree()
	if err != nil {
		_, _ = w.Write([]byte("Error getting file tree: " + err.Error()))
		return
	}

	data["readme"] = render_readme_at_tree(tree)
	data["files"] = build_display_git_tree(tree)

	data["commits"] = commits

	err = templates.ExecuteTemplate(w, "repo_log", data)
	if err != nil {
		_, _ = w.Write([]byte("Error rendering template: " + err.Error()))
		return
	}
}

package main

import (
	"bytes"
	"errors"
	"html/template"
	"net/http"
	"path"
	"strings"

	chroma_formatters_html "github.com/alecthomas/chroma/v2/formatters/html"
	chroma_lexers "github.com/alecthomas/chroma/v2/lexers"
	chroma_styles "github.com/alecthomas/chroma/v2/styles"
	"github.com/go-git/go-git/v5/plumbing/object"
)

func handle_repo_tree(w http.ResponseWriter, r *http.Request) {
	data := make(map[string]any)
	raw_path_spec := r.PathValue("rest")
	group_name, repo_name, path_spec := r.PathValue("group_name"), r.PathValue("repo_name"), strings.TrimSuffix(raw_path_spec, "/")
	ref_type, ref_name, err := get_param_ref_and_type(r)
	if err != nil {
		if errors.Is(err, err_no_ref_spec) {
			ref_type = "head"
		} else {
			_, _ = w.Write([]byte("Error querying ref type: " + err.Error()))
			return
		}
	}
	data["ref_type"], data["ref"], data["group_name"], data["repo_name"], data["path_spec"] = ref_type, ref_name, group_name, repo_name, path_spec
	repo, err := open_git_repo(group_name, repo_name)
	if err != nil {
		_, _ = w.Write([]byte("Error opening repo: " + err.Error()))
		return
	}
	ref_hash, err := get_ref_hash_from_type_and_name(repo, ref_type, ref_name)
	if err != nil {
		_, _ = w.Write([]byte("Error getting ref hash: " + err.Error()))
		return
	}
	commit_object, err := repo.CommitObject(ref_hash)
	if err != nil {
		_, _ = w.Write([]byte("Error getting commit object: " + err.Error()))
		return
	}
	tree, err := commit_object.Tree()
	if err != nil {
		_, _ = w.Write([]byte("Error getting file tree: " + err.Error()))
		return
	}

	var target *object.Tree
	if path_spec == "" {
		target = tree
	} else {
		target, err = tree.Tree(path_spec)
		if err != nil {
			file, err := tree.File(path_spec)
			if err != nil {
				_, _ = w.Write([]byte("Error retrieving path: " + err.Error()))
				return
			}
			if len(raw_path_spec) != 0 && raw_path_spec[len(raw_path_spec)-1] == '/' {
				http.Redirect(w, r, "../"+path_spec, http.StatusSeeOther)
				return
			}
			file_contents, err := file.Contents()
			if err != nil {
				_, _ = w.Write([]byte("Error reading file: " + err.Error()))
				return
			}
			lexer := chroma_lexers.Match(path_spec)
			if lexer == nil {
				lexer = chroma_lexers.Fallback
			}
			iterator, err := lexer.Tokenise(nil, file_contents)
			if err != nil {
				_, _ = w.Write([]byte("Error tokenizing code: " + err.Error()))
				return
			}
			var formatted_unencapsulated bytes.Buffer
			style := chroma_styles.Get("autumn")
			formatter := chroma_formatters_html.New(chroma_formatters_html.WithClasses(true), chroma_formatters_html.TabWidth(8))
			err = formatter.Format(&formatted_unencapsulated, style, iterator)
			if err != nil {
				_, _ = w.Write([]byte("Error formatting code: " + err.Error()))
				return
			}
			formatted_encapsulated := template.HTML(formatted_unencapsulated.Bytes())
			data["file_contents"] = formatted_encapsulated

			err = templates.ExecuteTemplate(w, "repo_tree_file", data)
			if err != nil {
				_, _ = w.Write([]byte("Error rendering template: " + err.Error()))
				return
			}
			return
		}
	}

	if len(raw_path_spec) != 0 && raw_path_spec[len(raw_path_spec)-1] != '/' {
		http.Redirect(w, r, path.Base(path_spec)+"/", http.StatusSeeOther)
		return
	}

	data["readme"] = render_readme_at_tree(target)

	data["readme_filename"], data["readme"] = render_readme_at_tree(target)

	data["files"] = build_display_git_tree(target)

	err = templates.ExecuteTemplate(w, "repo_tree_dir", data)
	if err != nil {
		_, _ = w.Write([]byte("Error rendering template: " + err.Error()))
		return
	}
}

package main

import (
	"bytes"

	"html"

	"html/template"

	"github.com/go-git/go-git/v5/plumbing/object"
	"github.com/microcosm-cc/bluemonday"
	"github.com/yuin/goldmark"
	"github.com/yuin/goldmark/extension"
)

var markdown_converter = goldmark.New(goldmark.WithExtensions(extension.GFM))

func render_readme_at_tree(tree *object.Tree) any {
	readme_file, err := tree.File("README.md")
	if err != nil {
		return ""

func render_readme_at_tree(tree *object.Tree) (readme_filename string, readme_content template.HTML) {
	var readme_rendered_unsafe bytes.Buffer

	readme_file, err := tree.File("README")
	if err == nil {
		readme_file_contents, err := readme_file.Contents()
		if err != nil {
			return "Error fetching README", string_escape_html("Unable to fetch contents of README: " + err.Error())
		}
		return "README", template.HTML("<pre>" + html.EscapeString(readme_file_contents) + "</pre>")

	}

	readme_file_contents, err := readme_file.Contents()
	if err != nil {
		return "Unable to fetch contents of README: " + err.Error()

	readme_file, err = tree.File("README.md")
	if err == nil {
		readme_file_contents, err := readme_file.Contents()
		if err != nil {
			return "Error fetching README", string_escape_html("Unable to fetch contents of README: " + err.Error())
		}
		err = markdown_converter.Convert([]byte(readme_file_contents), &readme_rendered_unsafe)
		if err != nil {
			return "Error fetching README", string_escape_html("Unable to render README: " + err.Error())
		}
		return "README.md", template.HTML(bluemonday.UGCPolicy().SanitizeBytes(readme_rendered_unsafe.Bytes()))

	}

	var readme_rendered_unsafe bytes.Buffer
	err = markdown_converter.Convert([]byte(readme_file_contents), &readme_rendered_unsafe)
	if err != nil {
		return "Unable to render README: " + err.Error()
	}
	return template.HTML(bluemonday.UGCPolicy().SanitizeBytes(readme_rendered_unsafe.Bytes()))

	return "", ""
}

func string_escape_html(s string) template.HTML {
	return template.HTML(html.EscapeString(s))

}

{{- define "repo_index" -}}
<!DOCTYPE html>
<html lang="en">
	<head>
		{{ template "head_common" . }}
		<title>{{ .group_name }}/repos/{{ .repo_name }} &ndash; Lindenii Forge</title>
	</head>
	<body class="repo-index">
		<header>
			{{ template "repo_header" . }}
		</header>
		<div class="padding-wrapper scroll">
			<input id="toggle-table-recent-commits" type="checkbox" class="toggle-table-off" />
			<table id="recent-commits" class="wide">
				<thead>
					<tr class="title-row">
						<th colspan="3"><label for="toggle-table-recent-commits">Recent Commits (<a href="log/{{ .ref }}/">see all</a>)</label></th>
					</tr>
				</thead>
				<tbody>
					{{- range .commits }}
						<tr>
							<td class="commit-title"><a href="commit/{{ .ID }}">{{ .Message | first_line }}</a></td>
							<td class="commit-author">
								<a class="email-name" href="mailto:{{ .Author.Email }}">{{ .Author.Name }}</a>
							</td>
							<td class="commit-time">
								{{ .Author.When.Format "2006-01-02 15:04:05 -0700" }}
							</td>
						</tr>
					{{- end }}
				</tbody>
			</table>
		</div>
		<div class="padding-wrapper scroll">
			<input id="toggle-table-file-tree" type="checkbox" class="toggle-table-off" />
			<table id="file-tree" class="wide">
				<thead>
					<tr class="title-row">
						<th colspan="3"><label for="toggle-table-file-tree">/ on {{ .ref }}</label></th>
					</tr>
				</thead>
				<tbody>
					{{- $ref := .ref }}
					{{- range .files }}
						<tr>
							<td class="file-mode">{{ .Mode }}</td>
							<td class="file-name"><a href="tree/{{ .Name }}">{{ .Name }}</a>{{ if not .Is_file }}/{{ end }}</td>
							<td class="file-size">{{ .Size }}</td>
						</tr>
					{{- end }}
				</tbody>
			</table>
		</div>
		<div class="padding-wrapper">
			<div id="refs">
			</div>
		</div>
		<div class="padding-wrapper">
			{{ if .readme }}
				<input id="toggle-table-readme" type="checkbox" class="toggle-table-off" />
				<table class="wide">
					<thead>
						<tr class="title-row">

							<th><label for="toggle-table-readme">README</label></th>

							<th><label for="toggle-table-readme">{{ .readme_filename }}</label></th>

						</tr>
					</thead>
					<tbody>
						<tr>
							<td id="readme">
								{{ .readme -}}
							</td>
						</tr>
					</tbody>
				</table>
			{{ end }}
		</div>
		<footer>
			{{ template "footer" . }}
		</footer>
	</body>
</html>
{{- end -}}

{{- define "repo_tree_dir" -}}
<!DOCTYPE html>
<html lang="en">
	<head>
		{{ template "head_common" . }}
		<title>{{ .group_name }}/repos/{{ .repo_name }}/{{ .path_spec }}{{ if ne .path_spec "" }}/{{ end }} &ndash; Lindenii Forge</title>
	</head>
	<body class="repo-tree-dir">
		<header>
			{{ template "repo_header" . }}
		</header>
		<div class="padding-wrapper scroll">
			<table id="file-tree" class="wide">
				<thead>
					<tr class="title-row">
						<th colspan="3">
							/{{ .path_spec }}{{ if ne .path_spec "" }}/{{ end }} on {{ .ref }}
						</th>
					</tr>
				</thead>
				<tbody>
					{{- $path_spec := .path_spec }}
					{{- range .files }}
						<tr>
							<td class="file-mode">{{ .Mode }}</td>
							<td class="file-name"><a href="{{ .Name }}{{ if not .Is_file }}/{{ end }}">{{ .Name }}</a>{{ if not .Is_file }}/{{ end }}</td>
							<td class="file-size">{{ .Size }}</td>
						</tr>
					{{- end }}
				</tbody>
			</table>
		</div>
		<div class="padding-wrapper">
			<div id="refs">
			</div>
		</div>
		<div class="padding-wrapper">
			{{ if .readme }}
				<table class="wide">
					<thead>
						<tr class="title-row">

							<th>
								README.md
							</th>

							<th>{{ .readme_filename }}</th>

						</tr>
					</thead>
					<tbody>
						<tr>
							<td id="readme">
								{{ .readme -}}
							</td>
						</tr>
					</tbody>
				</table>
			{{ end }}
		</div>
		<footer>
			{{ template "footer" . }}
		</footer>
	</body>
</html>
{{- end -}}