package main

import (
	"net/http"
)

func handle_login(w http.ResponseWriter, r *http.Request, params map[string]any) {
	if r.Method != "POST" {
		err := templates.ExecuteTemplate(w, "login", params)
		if err != nil {
			_, _ = w.Write([]byte("Error rendering template: " + err.Error()))
			return
		}
	}

	_ = r.PostFormValue("username")
	_ = r.PostFormValue("password")
}

package main

import (
	"errors"
	"fmt"
	"net/http"
	"strings"
)

type http_router_t struct{}

func (router *http_router_t) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	segments, _, err := parse_request_uri(r.RequestURI)
	if err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}
	non_empty_last_segments_len := len(segments)
	dir_mode := false
	if segments[len(segments)-1] == "" {
		non_empty_last_segments_len--
		dir_mode = true
	}

	if segments[0] == ":" {
		if len(segments) < 2 {
			http.Error(w, "Blank system endpoint", http.StatusNotFound)
			return
		} else if len(segments) == 2 && !dir_mode {
			http.Redirect(w, r, r.URL.Path+"/", http.StatusSeeOther)
			return
		}

		switch segments[1] {
		case "static":
			static_handler.ServeHTTP(w, r)

			return

		case "source":
			source_handler.ServeHTTP(w, r)

		default:
			http.Error(w, fmt.Sprintf("Unknown system module type: %s", segments[1]), http.StatusNotFound)

			return

		}

		return

	}

	params := make(map[string]any)
	params["global"] = global_data
	var _user_id int
	_user_id, params["username"], err = get_user_info_from_request(r)
	if _user_id == 0 {
		params["user_id"] = ""
	} else {
		params["user_id"] = string(_user_id)

	}

	if segments[0] == ":" {
		switch segments[1] {
		case "login":
			handle_login(w, r, params)
			return
		default:
			http.Error(w, fmt.Sprintf("Unknown system module type: %s", segments[1]), http.StatusNotFound)
			return
		}

	}

	fmt.Printf("%#v\n", params)

	separator_index := -1
	for i, part := range segments {
		if part == ":" {
			separator_index = i
			break
		}
	}

	switch {
	case non_empty_last_segments_len == 0:
		handle_index(w, r, params)
	case separator_index == -1:
		http.Error(w, "Group indexing hasn't been implemented yet", http.StatusNotImplemented)
	case non_empty_last_segments_len == separator_index+1:
		http.Error(w, "Group root hasn't been implemented yet", http.StatusNotImplemented)
	case non_empty_last_segments_len == separator_index+2:
		if !dir_mode {
			http.Redirect(w, r, r.URL.Path+"/", http.StatusSeeOther)
			return
		}
		module_type := segments[separator_index+1]
		params["group_name"] = segments[0]
		switch module_type {
		case "repos":
			handle_group_repos(w, r, params)
		default:
			http.Error(w, fmt.Sprintf("Unknown module type: %s", module_type), http.StatusNotFound)
		}
	default:
		module_type := segments[separator_index+1]
		module_name := segments[separator_index+2]
		params["group_name"] = segments[0]
		switch module_type {
		case "repos":
			params["repo_name"] = module_name
			// TODO: subgroups
			if non_empty_last_segments_len == separator_index+3 {
				if !dir_mode {
					http.Redirect(w, r, r.URL.Path+"/", http.StatusSeeOther)
					return
				}
				handle_repo_index(w, r, params)
				return
			}
			repo_feature := segments[separator_index+3]
			switch repo_feature {
			case "info":
				handle_repo_info(w, r, params)
			case "tree":
				params["rest"] = strings.Join(segments[separator_index+4:], "/")
				handle_repo_tree(w, r, params)
			case "raw":
				params["rest"] = strings.Join(segments[separator_index+4:], "/")
				handle_repo_raw(w, r, params)
			case "log":
				if non_empty_last_segments_len != separator_index+5 {
					http.Error(w, "Too many parameters", http.StatusBadRequest)
					return
				}
				if dir_mode {
					http.Redirect(w, r, strings.TrimSuffix(r.URL.Path, "/"), http.StatusSeeOther)
					return
				}
				params["ref"] = segments[separator_index+4]
				handle_repo_log(w, r, params)
			case "commit":
				if dir_mode {
					http.Redirect(w, r, strings.TrimSuffix(r.URL.Path, "/"), http.StatusSeeOther)
					return
				}
				params["commit_id"] = segments[separator_index+4]
				handle_repo_commit(w, r, params)
			default:
				http.Error(w, fmt.Sprintf("Unknown repo feature: %s", repo_feature), http.StatusNotFound)
			}
		default:
			http.Error(w, fmt.Sprintf("Unknown module type: %s", module_type), http.StatusNotFound)
		}
	}
}

var err_bad_request = errors.New("Bad Request")

html {
	font-family: sans-serif;
	background-color: var(--background-color);
	color: var(--text-color);
	--background-color: hsl(0, 0%, 100%);
	--text-color: hsl(0, 0%, 0%);
	--link-color: hsl(320, 50%, 36%);
	--light-text-color: hsl(0, 0%, 45%);
	--darker-border-color: hsl(0, 0%, 72%);
	--lighter-border-color: hsl(0, 0%, 85%);
	--text-decoration-color: hsl(0, 0%, 72%);
	--darker-box-background-color: hsl(0, 0%, 92%);
	--lighter-box-background-color: hsl(0, 0%, 95%);

	--primary-color: hsl(320, 50%, 36%);
	--primary-color-contrast: hsl(320, 0%, 100%);
	--danger-color: hsl(0, 50%, 36%);
	--danger-color-contrast: hsl(0, 0%, 100%);

}
@media (prefers-color-scheme: dark) {
	html {
		--background-color: hsl(0, 0%, 0%);
		--text-color: hsl(0, 0%, 100%);
		--link-color: hsl(320, 50%, 76%);
		--light-text-color: hsl(0, 0%, 78%);
		--darker-border-color: hsl(0, 0%, 35%);
		--lighter-border-color: hsl(0, 0%, 25%);
		--text-decoration-color: hsl(0, 0%, 30%);
		--darker-box-background-color: hsl(0, 0%, 20%);
		--lighter-box-background-color: hsl(0, 0%, 15%);
	}
}
html, code, pre {
	font-size: 1rem; /* TODO: Not always correct */
}
footer {
	margin-top: 1rem;
	margin-left: auto;
	margin-right: auto;
	display: block;
	padding: 0 5px;
	width: fit-content;
	text-align: center;
	color: var(--light-text-color);
}
footer a:link, footer a:visited {
	color: inherit;
}
.padding-wrapper {
	margin: 1rem auto;
	max-width: 60rem;
	padding: 0 5px;
}
a:link, a:visited {
	text-decoration-color: var(--text-decoration-color);
	color: var(--link-color);
}
#readme code:not(pre > code) {
	background-color: var(--lighter-box-background-color);
	border-radius: 2px;
	padding: 2px;
}
table {
	border: var(--lighter-border-color) solid 1px;
	border-spacing: 0px;
	border-collapse: collapse;
}
table.wide {
	width: 100%;
}
td, th {
	padding: 3px 5px;
	border: var(--lighter-border-color) solid 1px;
}

th {

th, thead, tfoot {

	background-color: var(--lighter-box-background-color);
}
th[scope=row] {
	text-align: left;
}
tr.title-row > th {
	background-color: var(--darker-box-background-color);
}
td > pre {
	margin: 0;
}
td#readme > *:last-child {
	margin-bottom: 0;
}
td#readme > *:first-child {
	margin-top: 0;
}
.commit-id {
	font-family: monospace;
}
.scroll {
	overflow-x: auto;
}
.toggle-table-off, .toggle-table-on {
	display: none;
}
.toggle-table-off + table > thead > tr > th, .toggle-table-on + table > thead > tr > th {
	padding: 0;
}
.toggle-table-off + table > thead > tr > th > label, .toggle-table-on + table > thead > tr > th > label {
	width: 100%;
	display: inline-block;
	padding: 3px 0;
	cursor: pointer;
}
.toggle-table-off:checked + table > tbody {
	display: none;
}
.toggle-table-on + table > tbody {
	display: none;
}
.toggle-table-on:checked + table > tbody {
	display: table-row-group;
}
.chunk-unchanged {
	color: grey;
}
.chunk-addition {
	color: green;
}
@media (prefers-color-scheme: dark) {
	.chunk-addition {
		color: lime;
	}
}
.chunk-deletion {
	color: red;
}
.chunk-unknown {
	color: yellow;
}
pre.chunk {
	margin-top: 0;
	margin-bottom: 0;
}
.toggle-on-wrapper {
	border: var(--lighter-border-color) solid 1px;
}
.toggle-on-toggle {
	display: none;
}
.toggle-on-header {
	cursor: pointer;
	display: block;
	width: 100%;
	background-color: var(--lighter-box-background-color);
}
.toggle-on-header > span {
	padding: 3px 5px;
	display: inline-block;
}
.toggle-on-content {
	display: none;
}
.toggle-on-toggle:checked + .toggle-on-header + .toggle-on-content {
	display: block;
}
.file-patch + .file-patch {
	margin-top: 0.5rem;
}
.file-content {
	padding: 3px 5px;
}
.file-header {
	font-family: monospace;
}

textarea {
	box-sizing: border-box;
	background-color: var(--lighter-box-background-color);
	resize: vertical;
}
textarea,
input[type=text],
input[type=password] {
	font-family: sans-serif;
	font-size: smaller;
	background-color: var(--lighter-box-background-color);
	color: var(--text-color);
	border: none;
	padding: 0.3rem;
	width: 100%;
	box-sizing: border-box;
}
td.tdinput, th.tdinput {
	padding: 0;
}
td.tdinput textarea,
td.tdinput input[type=text],
td.tdinput input[type=password],
th.tdinput textarea,
th.tdinput input[type=text],
th.tdinput input[type=password] {
	background-color: transparent;
}
.btn-primary {
	background: var(--primary-color);
	color: var(--primary-color-contrast);
	border: var(--lighter-border-color) 1px solid;
	font-weight: bold;
}
.btn-danger {
	background: var(--danger-color);
	color: var(--danger-color-contrast);
	border: var(--lighter-border-color) 1px solid;
	font-weight: bold;
}
.btn-white {
	background: var(--primary-color-contrast);
	color: var(--primary-color);
	border: var(--lighter-border-color) 1px solid;
}
.btn-normal,
input[type=file]::file-selector-button {
	background: var(--lighter-box-background-color);
	border: var(--lighter-border-color) 1px solid !important;
	color: var(--light-text-color);
}
.btn, .btn-white, .btn-danger, .btn-normal, .btn-primary,
input[type=submit],
input[type=file]::file-selector-button {
	display: inline-block;
	width: auto;
	min-width: fit-content;
	border-radius: 0;
	padding: .1rem .75rem;
	font-size: 0.9rem;
	transition: background .1s linear;
	cursor: pointer;
}
a.btn, a.btn-white, a.btn-danger, a.btn-normal, a.btn-primary {
	text-decoration: none;
}

{{- define "login" -}}
<!DOCTYPE html>
<html lang="en">
	<head>
		{{ template "head_common" . }}
		<title>Login &ndash; Lindenii Forge</title>
	</head>
	<body class="index">
		<div class="padding-wrapper">
				<form method="POST" enctype="application/x-www-form-urlencoded">
					<table>
						<thead>
							<tr>
								<th class="title-row" colspan="2">
									Password Authentication
								</th>
							</tr>
						</thead>
						<tbody>
							<tr>
								<th scope="row">Username</th>
								<td class="tdinput">
									<input id="usernameinput" name="username" type="text" />
								</td>
							</tr>
							<tr>
								<th scope="row">Password</th>
								<td class="tdinput">
									<input id="passwordinput" name="password" type="password" />
								</td>
							</tr>
						</tbody>
						<tfoot>
							<tr>
								<td class="th-like" colspan="2">
									<div class="flex-justify">
										<div class="left">
										</div>
										<div class="right">
											<input class="btn-primary" type="submit" value="Submit" />
										</div>
									</div>
								</td>
							</tr>
						</tfoot>
					</table>
				</form>
		</div>
		<footer>
			{{ template "footer" . }}
		</footer>
	</body>
</html>
{{- end -}}