From 52b3b7df7fae5fcfc20d86c47a07474a55f0eced Mon Sep 17 00:00:00 2001
From: Sergio Medina <lumasepa@gmail.com>
Date: Fri, 6 Sep 2019 15:03:16 +0100
Subject: [PATCH] WIP add suport to hcl

---
 Cargo.toml  |  1 +
 README.md   | 17 +++++++++++++++++
 src/main.rs | 25 ++++++++++++++++++++-----
 3 files changed, 38 insertions(+), 5 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 4f6409c..5e32282 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,6 +15,7 @@ serde_json = "1.0.40"
 serde_yaml = "0.8.9"
 glob = "0.3.0"
 base64 = "0.10.1"
+molysite = ""
 
 [[bin]]
 name = "j2_render"
diff --git a/README.md b/README.md
index 3ed65fb..2521ab3 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,18 @@
 # j2_render
+
+j2_render is CLI tool to render [jinja 2]() templates, it can load the context from different sources.
+
+j2_render is writen in rust and uses [tera]() as jinja 2 engine,
+may be some differences between implementations, so look at tera's documentation for reference
+
+## Installation
+
+```bash 
+export J2_RENDER_VERSION=v0.0.1 
+sudo curl -L "https://github.com/lumasepa/j2_render/releases/download/${J2_RENDER_VERSION}/j2_render_$(uname | tr '[:upper:]' '[:lower:]')_amd64" -o /usr/local/bin/j2_render
+sudo chmod +x /usr/local/bin/j2_render
+```
+
+## Usage
+
+#### Usage Examples
diff --git a/src/main.rs b/src/main.rs
index e8369e3..db0c1ef 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,6 @@
 #![feature(or_patterns)]
 
+use molysite::hcl::parse_hcl;
 use serde_json;
 use serde_yaml;
 use std::ffi::OsStr;
@@ -21,7 +22,8 @@ mod testers;
 pub fn help() {
     println!(
         "
-renderman [opts]
+j2_render [opts]
+
     --stdin -i [json,yaml,hcl,tfvars,template] read from stdin context or template
     --out [file_path] output file for rendered template, default stdout
     --env -e load env vars in ctx
@@ -32,18 +34,20 @@ renderman [opts]
     )
 }
 
-pub fn parse_args() -> (String, Option<String>, Context) {
+pub fn parse_args() -> (String, Option<String>, bool, Context) {
     let mut args = env::args().collect::<Vec<String>>();
     args.reverse();
 
     let mut template = String::new();
     let mut context = Context::new();
     let mut out = None;
+    let mut print_ctx = false;
 
     args.pop(); // binary name
 
     while let Some(arg) = args.pop() {
         match arg.as_str() {
+            "--print-ctx" | "-p" => print_ctx = true,
             "--out" | "-o" => {
                 let filepath = args
                     .pop()
@@ -93,7 +97,7 @@ pub fn parse_args() -> (String, Option<String>, Context) {
             _ => panic!("Error argument {} not recognized", arg),
         }
     }
-    return (template, out, context);
+    return (template, out, print_ctx, context);
 }
 
 pub fn populate_ctx(context: &mut Context, format: String, data: String) {
@@ -120,14 +124,25 @@ pub fn populate_ctx(context: &mut Context, format: String, data: String) {
                 context.insert(k, v);
             }
         }
-        "hcl" | "tfvars" | "tf" => panic!("Format not already supported"),
+        "hcl" | "tfvars" | "tf" => {
+            let parsed_hcl = parse_hcl(&data).expect("Error parsing hcl/tf/tfvars");
+            let object = value
+                .as_object()
+                .expect("Error expected object in root of hcl/tf/tfvars file");
+            for (k, v) in object.iter() {
+                context.insert(k, v);
+            }
+        }
         _ => panic!("Format {} not recognized", format),
     }
 }
 
 pub fn main() -> std::result::Result<(), String> {
-    let (template, out, context) = parse_args();
+    let (template, out, print_ctx, context) = parse_args();
 
+    if print_ctx {
+        println!()
+    }
     let mut tera = Tera::default();
     tera.add_raw_template("template", &template)
         .expect("Error loading template in engine");