// OpenSAPS - Open Slack API server for everyone.
//
// Copyright (c) 2017, Stanislav N. aka pztrn.
// All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
package giteaparser

import (
    // stdlib
    "fmt"
    "regexp"
    "strings"

    // local
    "lab.pztrn.name/pztrn/opensaps/slack/message"
)

type GiteaParser struct {}

func (gp GiteaParser) Initialize() {
    c.Log.Infoln("Initializing Gitea parser...")
}

func (gp GiteaParser) cutCommitLink(data string) [][]string {
    var links [][]string
    c.Log.Debugln("Passed:", data)

    r := regexp.MustCompile("(http[?s]://[a-zA-Z1-9./-]+)|([a-zA-Z1-9]+)>")

    found := r.FindAllStringSubmatch(data, -1)

    var result []string
    for i := range found {
        if i%2 == 0 {
            result = make([]string, 0, 2)
            result = append(result, found[i][1])
        } else {
            result = append(result, found[i][2])
            links = append(links, result)
        }
    }

    c.Log.Debugln("Links cutted:", links)
    return links
}

func (gp GiteaParser) cutHeaderLinks(data string) [][]string {
    var links [][]string
    c.Log.Debugln("Passed:", data)

    r := regexp.MustCompile("<(http[?s]://[a-zA-Z1-9./-]+)|([a-zA-Z1-9_-]+)>")

    found := r.FindAllStringSubmatch(data, -1)

    var result []string
    for i := range found {
        if i%2 == 0 {
            result = make([]string, 0, 2)
            result = append(result, found[i][1])
        } else {
            result = append(result, found[i][2])
            links = append(links, result)
        }
    }

    c.Log.Debugln("Links cutted:", links)
    return links
}

func (gp GiteaParser) ParseMessage(message slackmessage.SlackMessage) string {
    c.Log.Debugln("Parsing Gitea message...")

    var msg string = ""

    // Parse header.
    // [0] is repo, [1] is branch.
    header_data := gp.cutHeaderLinks(message.Text)

    msg += fmt.Sprintf("[Repo: <a href='%s'>%s</a> | Branch: <a href='%s'>%s</a>] ", header_data[0][0], header_data[0][1], header_data[1][0], header_data[1][1])

    header_msg := strings.Split(message.Text, "] ")[1]
    msg += header_msg + "<br />"

    // Parse commits.
    for i := range message.Attachments {
        // Commit link.
        attachment_link := gp.cutCommitLink(message.Attachments[i].Text)
        msg += fmt.Sprintf("<a href='%s'>%s</a>: ", attachment_link[0][0], attachment_link[0][1])
        // Commit author and message.
        authormsg := strings.Split(message.Attachments[i].Text, ">: ")[1]
        msg += authormsg + "<br />"
    }

    c.Log.Debugln("Message:", msg)

    return msg
}