use serde::Serialize;

#[derive(Debug, Clone, Serialize)]
pub struct Position {
    pub line: u32,
    pub character: u32
}

#[derive(Debug, Clone, Serialize)]
pub struct Range {
    pub start: Position,
    pub end: Position
}

#[derive(Debug, Serialize)]
pub struct Port {
    pub name: String,
    pub dir_type: String,
    pub net_type: String,
    pub width: String,
    pub signed: String,
    pub range: Range
}

#[derive(Debug, Serialize)]
pub struct Parameter {
    pub name: String,
    pub net_type: String,
    pub init: String,
    pub range: Range
}

// #[derive(Debug, Serialize)]
// pub struct InstPort {
//     pub name: String,
//     pub range: Range
// }

// #[derive(Debug, Serialize)]
// pub struct InstParameter {
//     pub name: String,
//     pub value: String,
//     pub range: Range
// }

#[derive(Debug, Serialize)]
pub struct Instance {
    pub name: String,
    pub inst_type: String,
    pub instparams: Option<Range>,
    pub instports: Option<Range>,
    pub range: Range
}

#[derive(Debug, Serialize)]
pub struct Module {
    pub name: String,
    pub params: Vec<Parameter>,
    pub ports: Vec<Port>,
    pub instances: Vec<Instance>,
    pub range: Range
}

#[derive(Debug, Serialize)]
pub struct FastHdlparam {
    pub fast: Vec<Module>
}

impl FastHdlparam {
    pub fn new_module(&mut self, name: &str, line: u32, character: u32, end_character: u32) {
        let module = Module {
            name: name.to_string(),
            params: Vec::new(),
            ports: Vec::new(),
            instances: Vec::new(),
            range: Range {
                start: Position {
                    line, character
                },
                end: Position {
                    line, character: end_character
                }
            }
        };
        self.fast.push(module);
    }

    pub fn add_parameter(&mut self, name: &str, net_type: &str, init: &str,
        start_line: u32, start_character: u32, end_line: u32, end_character: u32) {
        let last_module = self.fast.last_mut().unwrap();
        let parameter = Parameter {
            name: name.to_string(),
            net_type: net_type.to_string(),
            init: init.to_string(),
            range: Range {
                start: Position {
                    line: start_line, character: start_character
                },
                end: Position {
                    line:end_line, character: end_character
                }
            }
        };
        last_module.params.push(parameter);
    }

    pub fn add_port(&mut self, name: &str, dir_type: &str, net_type: &str, width: &str,
        start_line: u32, start_character: u32, end_line: u32, end_character: u32) {
        let last_module = self.fast.last_mut().unwrap();
        let port = Port {
            name: name.to_string(),
            dir_type: dir_type.to_string(),
            net_type: net_type.to_string(),
            width: width.to_string(),
            signed: "unsigned".to_string(),
            range: Range {
                start: Position {
                    line: start_line, character: start_character
                },
                end: Position {
                    line:end_line, character: end_character
                }
            }
        };
        last_module.ports.push(port);
    }

    pub fn add_instance(&mut self, name: &str, inst_type: &str, line: u32, character: u32, end_character: u32,
        param_start_line: u32, param_start_character: u32, param_end_line: u32, param_end_character: u32,
        port_start_line: u32, port_start_character: u32, port_end_line: u32, port_end_character: u32 ) {
        let last_module = self.fast.last_mut().unwrap();
        let instance = Instance {
            name: name.to_string(),
            inst_type: inst_type.to_string(),
            instparams: if param_start_line == 0 {
                None
            } else {
                Some(
                    Range {
                        start: Position {
                            line: param_start_line, character: param_start_character
                        },
                        end: Position {
                            line: param_end_line, character: param_end_character
                        }
                    }
                )
            },
            instports: if port_start_line == 0 {
                None
            } else {
                Some(
                    Range {
                        start: Position {
                            line: port_start_line, character: port_start_character
                        },
                        end: Position {
                            line: port_end_line, character: port_end_character
                        }
                    }
                )
            },
            range: Range {
                start: Position {
                    line, character
                },
                end: Position {
                    line, character: end_character
                }
            }
        };
        last_module.instances.push(instance);
    }

    pub fn print_fast(&self) {
        if self.fast.is_empty() {
            println!("none module");
        } else {
            for module in &self.fast {
                println!("module {}", module.name);
                if !module.params.is_empty() {
                    println!("  params:");
                    for param in &module.params {
                        println!("    parameter {} {} {}", param.net_type, param.name, param.init);
                        println!("      range start {} {}", param.range.start.line, param.range.start.character);
                        println!("      range   end {} {}", param.range.end.line, param.range.end.character);
                    }
                }
                if !module.ports.is_empty() {
                    println!("  ports:");
                    for port in &module.ports {
                        if port.width == "1" {
                            println!("    {} {} {}", port.dir_type, port.net_type, port.name);
                        } else {
                            println!("    {} {} {} {}", port.dir_type, port.net_type, port.width, port.name);
                        }
                        println!("      range start {} {}", port.range.start.line, port.range.start.character);
                        println!("      range   end {} {}", port.range.end.line, port.range.end.character);
                    }
                }
                if !module.instances.is_empty() {
                    println!("  instances:");
                    for instance in &module.instances {
                        println!("    {} {}", instance.inst_type, instance.name);
                        if instance.instparams.is_none() {
                            println!("      params: {:?}", instance.instparams);
                        } else {
                            println!("      params:");
                            println!("        range start {} {}", instance.instparams.clone().unwrap().start.line,
                                                                  instance.instparams.clone().unwrap().start.character);
                            println!("        range   end {} {}", instance.instparams.clone().unwrap().end.line,
                                                                  instance.instparams.clone().unwrap().end.character);
                        }
                        if instance.instports.is_none() {
                            println!("      ports: {:?}", instance.instports);
                        } else {
                            println!("      ports:");
                            println!("        range start {} {}", instance.instports.clone().unwrap().start.line,
                                                                  instance.instports.clone().unwrap().start.character);
                            println!("        range   end {} {}", instance.instports.clone().unwrap().end.line,
                                                                  instance.instports.clone().unwrap().end.character);
                        }
                        println!("      range start {} {}", instance.range.start.line, instance.range.start.character);
                        println!("      range   end {} {}", instance.range.end.line, instance.range.end.character);
                    }
                }
                println!("  range start {} {}", module.range.start.line, module.range.start.character);
                println!("  range   end {} {}", module.range.end.line, module.range.end.character);
            }
        }
    }
}