/*

 * Hurl (https://hurl.dev)

 * Copyright (C) 2024 Orange

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *          http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 *

 */

use colored::Colorize;

use crate::text::style::{Color, Style};

/// A String with style.

///

/// A styled string can be composed of styled parts (tokens). A token has a style (an optional

/// foreground color with a bold attribute) and a string content.

///

/// A styled string can be rendered as plain text, or as a string with

/// [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code). It's useful to make text

/// that can be colored or plain at runtime.

#[derive(Clone, Debug, Default, PartialEq, Eq)]

pub struct StyledString {

    /// A list of tokens (styled parts).

    tokens: Vec<Token>,

}

/// Represents part of a [`StyledString`].

#[derive(Clone, Debug, PartialEq, Eq)]

struct Token {

    /// The string content of the token.

    content: String,

    /// The style of the token, a foreground color with a bold attribute.

    style: Style,

}

/// The format in which a [`StyledString`] can be rendered.

#[derive(Copy, Clone, Debug, PartialEq, Eq)]

pub enum Format {

    Plain,

    Ansi,

}

impl StyledString {

    /// Creates an empty instance of a styled string.

    }

    /// Appends a given `content` without any style onto this end of this `StyledString`

    }

    /// Appends a given `content` with a specific `style`.

    }

        // Concatenate content to last token if it has the same style

            }

        }

    }

    /// Renders a styled string given a `format`.

    }

    /// Appends a styled string.

        }

    }

    /// Splits a styled string to a given list of [`StyledString`], given a `delimiter`.

            }

                }

            }

        }

    }

    /// Tests if this styled string ends with a given `value`, no matter what's the style of the string.

    }

    /// Returns the length of visible chars.

    }

    /// Checks if this string is empty.

    }

    /// Add newlines so each lines of this string has a maximum of `max_width` chars.

            // Iterate over each chars of the current token, splitting the current

            // token if necessary

                    }

                }

            }

            // Append the last chunk

            }

        }

    }

}

/// Represents part of a styled string.

impl Token {

    }

        }

    }

    }

                Color::Blue => {

                    } else {

                    }

                }

                Color::BrightBlack => {

                    } else {

                    }

                }

                Color::Cyan => {

                    } else {

                    }

                }

                Color::Green => {

                    } else {

                    }

                }

                Color::Magenta => {

                    } else {

                    }

                }

                Color::Purple => {

                    } else {

                    }

                }

                Color::Red => {

                    } else {

                    }

                }

                Color::Yellow => {

                    } else {

                    }

                }

            };

        }

    }

}

#[cfg(test)]

mod tests {

    use super::*;

    #[test]

    fn test_hello() {

        crate::text::init_crate_colored();

        let mut message = StyledString::new();

        message.push("Hello ");

        message.push_with("Bob", Style::new().red());

        message.push("!");

        assert_eq!(message.to_string(Format::Plain), "Hello Bob!");

        assert_eq!(

            message.to_string(Format::Ansi),

            "Hello \u{1b}[31mBob\u{1b}[0m!"

        );

    }

    #[test]

    fn test_push() {

        let mut message = StyledString::new();

        message.push("Hello");

        message.push(" ");

        message.push_with("Bob", Style::new().red());

        message.push("!");

        assert_eq!(

            message,

            StyledString {

                tokens: vec![

                    Token {

                        content: "Hello ".to_string(),

                        style: Style::new()

                    },

                    Token {

                        content: "Bob".to_string(),

                        style: Style::new().red()

                    },

                    Token {

                        content: "!".to_string(),

                        style: Style::new()

                    },

                ],

            }

        );

    }

    #[test]

    fn test_append() {

        let mut message1 = StyledString::new();

        message1.push("Hello ");

        message1.push_with("Bob", Style::new().red());

        message1.push("!");

        let mut message2 = StyledString::new();

        message2.push("Hi ");

        message2.push_with("Bill", Style::new().red());

        message2.push("!");

        let mut messages = StyledString::new();

        messages.push("Hello ");

        messages.push_with("Bob", Style::new().red());

        messages.push("!");

        messages.push("Hi ");

        messages.push_with("Bill", Style::new().red());

        messages.push("!");

        message1.append(message2);

        assert_eq!(message1, messages);

    }

    #[test]

    fn test_split() {

        let mut line = StyledString::new();

        line.push("Hello,Hi,");

        line.push_with("Hola", Style::new().red());

        line.push(",Bye,");

        line.push_with("Adios", Style::new().red());

        let mut item0 = StyledString::new();

        item0.push("Hello");

        let mut item1 = StyledString::new();

        item1.push("Hi");

        let mut item2 = StyledString::new();

        item2.push_with("Hola", Style::new().red());

        let mut item3 = StyledString::new();

        item3.push("Bye");

        let mut item4 = StyledString::new();

        item4.push_with("Adios", Style::new().red());

        assert_eq!(line.split(','), vec![item0, item1, item2, item3, item4]);

        // Test empty items

        let mut line = StyledString::new();

        line.push("0,,2,");

        let mut item0 = StyledString::new();

        item0.push("0");

        let item1 = StyledString::new();

        let mut item2 = StyledString::new();

        item2.push("2");

        let item3 = StyledString::new();

        assert_eq!(line.split(','), vec![item0, item1, item2, item3]);

    }

    #[test]

    fn test_ends_with() {

        let mut line = StyledString::new();

        line.push("Hello,Hi,");

        assert!(line.ends_with(","));

        assert!(!line.ends_with("\n"));

    }

    #[test]

    fn compare_with_crate_colored() {

        // These tests are used to check regression against the [colored crate](https://crates.io/crates/colored).

        // A short-term objective is to remove the colored crates to manage ansi colors.

        let mut message = StyledString::new();

        message.push_with("foo", Style::new().red().bold());

        assert_eq!(

            "foo".red().bold().to_string(),

            message.to_string(Format::Ansi),

        );

        let mut message = StyledString::new();

        message.push_with("bar", Style::new().bold());

        assert_eq!("bar".bold().to_string(), message.to_string(Format::Ansi),);

    }

    #[test]

    fn wrap_single_plain_token() {

        let mut line = StyledString::new();

        line.push("aaaabbbbcccc");

        let mut wrapped = StyledString::new();

        wrapped.push("aaaa\nbbbb\ncccc");

        assert_eq!(line.wrap(4), wrapped);

        assert_eq!(line.len(), 12);

        assert_eq!(line.wrap(4).len(), 14);

    }

    #[test]

    fn wrap_single_styled_token() {

        let mut line = StyledString::new();

        line.push_with("aaaabbbbcccc", Style::new().blue());

        let mut wrapped = StyledString::new();

        wrapped.push_with("aaaa", Style::new().blue());

        wrapped.push("\n");

        wrapped.push_with("bbbb", Style::new().blue());

        wrapped.push("\n");

        wrapped.push_with("cccc", Style::new().blue());

        assert_eq!(line.wrap(4), wrapped);

        assert_eq!(line.len(), 12);

        assert_eq!(line.wrap(4).len(), 14);

    }

    #[test]

    fn wrap_multi_styled_token() {

        let mut line = StyledString::new();

        line.push_with("aaa", Style::new().blue());

        line.push_with("ab", Style::new().green());

        line.push_with("bbbccc", Style::new().yellow());

        line.push_with("cee", Style::new().purple());

        let mut wrapped = StyledString::new();

        wrapped.push_with("aaa", Style::new().blue());

        wrapped.push_with("a", Style::new().green());

        wrapped.push("\n");

        wrapped.push_with("b", Style::new().green());

        wrapped.push_with("bbb", Style::new().yellow());

        wrapped.push("\n");

        wrapped.push_with("ccc", Style::new().yellow());

        wrapped.push_with("c", Style::new().purple());

        wrapped.push("\n");

        wrapped.push_with("ee", Style::new().purple());

        assert_eq!(line.wrap(4), wrapped);

    }

}